biology common essay

Essays About Biology: Top 5 Best Examples and 6 Prompts

Writing essays about biology can be difficult because it’s composed of many subtopics. Check out this article for our top essay examples and writing prompts.

Biology came from the Greek words “bios” (life) and “logos” (study). It’s why biology is the study of life or living organisms. Aside from being a natural science, it also has consolidated themes, such as cells making all organisms. Because it’s a broad topic, biology is divided into specialized fields such as botany, genetics, zoology, microbiology, medicine, and ecology. 

Biologists consider living beings’ origin, evolution, growth, function, structure, and distribution. It’s a comprehensive subject, so there are many things you can write about in your essay. However, at the same time, you might find it challenging to focus on just one area. 

Below are examples to give you an idea of how to write your essays about biology:

1. Essay About Biology by Kelli Wilkins

2. my interests in biology by anonymous on essaywriting.expert, 3. essay on the importance of study of biology by akhila mol, 4. what biology means to me by anonymous on studymode.com, 5. how my biology teacher changed my perspective of learning the subject by sankalan bhattacharya, 1. biology in my everyday life, 2. something i realized because of biology, 3. my memorable biology class experience, 4. genetics’ role in people’s diseases, 5. my experience during the pandemic, 6. biology and health.

“Studying Biology is important for a number of reasons, but in particular because it is used in every field. If we did not have a good understanding of Biology then nobody would be able to understand how bodies work, and how life on earth functions.”

Wilkins shares her desire to study anatomy, a branch of biology, and expounds on what makes biology an essential field. Because biology lets people know more about the world, she digs into why she’s interested in anatomy, specifically to find ways to cure illnesses and develop technologies to discover new treatments. She ends her essay by relating biology to the existence of doctors and hospitals. 

“It is known that education plays an important role in the life of any individual. It gives an opportunity to develop personality and gain specific skills, to get profound knowledge and experience in order to apply them practically in the future. As for me, my major goal is to study Biology in order to get appropriate knowledge and skills required for my future profession.”

The author shares why they want to study biology, referring to the human body as the “perfect machine” and curious about how it performs each of its systems’ functions. The writer also mentions how biology is critical to their future profession. They aim to help people with their health problems and relay their desire to research the brain to find more data on it. 

“The study of biology owes great significance in human life, because man for its day-to-day requirements is dependent on plants and animals either directly or indirectly.”

Mol lists seven reasons why humans need biology in their daily lives. Her list includes health, diseases, agriculture, horticulture, food, animal breeding, and entertainment. She expounds on each point and how they affect a man during his time on Earth. She explains each relationship in a simple manner that’s easy to understand for the readers.

“Without biology, we would have no idea about an organism’s makeup, or the most basic unit of life, a cell… Biology influences me in many ways. Biology influences me by teaching me why to take care of the environment, why I am to take care of my body, and by giving me a better overall view of all scientific areas of study.”

In this short essay, the writer lists down reasons why biology is essential. These reasons include taking care of the environment, one’s body, and others. The author also expounds on their reasons by presenting facts supporting biology’s importance to the world and human lives.

“He told that the syllabus may be a good way to prepare for an exam but our knowledge should not be limited to any syllabus and the questions that were asked in the examination were related to the topic only. He told that if we try to know things in detail and understand them properly then the interest in the subject will develop, otherwise, students will not treat the subject as a subject of their choice. 

Bhattacharya shares his experience with a teacher with a unique teaching style. His Biology teacher from Class 7, before the era of the internet, don’t just carry one book to get all his lessons from. Instead, he has a notebook with the collated information from many books to teach his class. 

Bhattacharya’s teacher taught them things that were not in the curriculum, even if following the curriculum would give him higher points in his evaluation. He only wanted his students to learn more and share with them why learning differs from just knowing. 

Do you want to be sure you have an excellent essay? See our round-up of the best essay writing apps to help you check your output.

6 Prompts for Essays About Biology

You don’t have to be a biology student to write an essay about the subject. If you’re looking for easy prompts to write about, here are some to get you started:

If mitochondria are the powerhouse of the cell, who is the powerhouse of your classroom? Your home? Relate a biology topic to a similar structure in your life, then explain why you think they are the same. 

For instance, you can compare your mother to mitochondria which generate the energy needed to power a cell. The cell being you. You can say that she gives you energy every day by being there and supporting you in whatever way she can. This prompt bodes for a creative and intriguing essay.

Relay a lesson you learned from biology and how it perfectly explained something you were once hesitant about. Such as being insecure about your big ears – only to know from a biology trivia that ears never stop growing. You can then share how this help lessen your insecurity because you now know large ears are normal. 

Do you have a memory you won’t forget that happened during biology class? Narrate this story and explain why it’s something that left an impression on you. To give you an idea, you can talk about the first time you dissected an animal, where you first realized how complex organisms are and that they are made of many systems to function, no matter how small.

Gene action and heredity are evolving. If you have a genetic illness or know someone who has it, you can share your experience. Then explain what your genes have to do with the disease. Is it something you got from your parents? Did they inherit it from your grandparents? Finally, you can add what your parents’ and grandparents’ lives were like because of the disease.

Virology, another branch of biology, studies viruses and viral diseases. A recent example is the coronavirus pandemic, where more people realized the importance of knowing a virus’ origin, structure, and how they work. Write an essay where you explain how the pandemic operates, such as why people should wear masks, social distance, etc.

For this essay, you can write about how biology helps you care for your health. For example, you can include how biology helped doctors give you the appropriate diagnosis, how you had the opportunity to have the proper treatment, etc. 

If you want to write on a related topic, here are essay topics about nature you can consider for your next essay. 

Maria Caballero is a freelance writer who has been writing since high school. She believes that to be a writer doesn't only refer to excellent syntax and semantics but also knowing how to weave words together to communicate to any reader effectively.

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How To Write A Biology Essay

Table of Contents

Content of this article

Topic choice.

• Content page
• Research question
• Introduction
• Investigation

Biology papers give us an opportunity of understanding forms that are complex in life. This, therefore, means you will have the chance to fully understand the plants as well as the animals found in the ecosystem. People are given assignments on biology so that they can fully research and have knowledge concerning the components of nature. An essay on biology also assists people in how to care for and tend to themselves. These biology papers also assist in fully understanding how the world and humanity are related. An essay on biology will, therefore, assist in answering queries and issues related to biology. The tips from our academic essay writing service may help a person to make the work professional without errors and mistakes. A primary element to keep in mind when writing biology papers is always to have a biology essay draft that will assist you all through the writing process. Biology essay topics need to be detailed so that they can be differentiated from other types of papers.

The topics of the biology papers determine the points that will be used in the article. This, therefore, means that the biology essay writing guide is dependent on the topic selected . Ensure that you fully understand what the biology essay writing expects from you and create a biology essay outline that will assist you in preparing an excellent piece. Biology essay outlining assists in the construction of detailed articles. Below are biology essay topics that one can use in biology essay writing.

Biology essay topics

• Are vaccines necessary in our system?
• Omnivore’s plants
• How did the dinosaurs just disappear?
• Did the evolution start from the monkeys?
• Which are the most intelligent animals on the face of the earth?
• Why do the male seahorses often carry the offspring?
• How were the wolves domesticated?
• The genetic mutations in plants and animals.
• How the albino animals are different; is this trait also shared in plants and humans?
• The process of aging in humans.

These are some of the good biology essay topics that you can use to produce an article that is standard.

Biology essay structure

The outline for a biology essay gives you clear guidelines on how to go about writing the article. The biology essay draft should go in line with the topic that the writer has chosen.

The biology essay outlining is as illustrated below:

1. The title

• The title page offers clear indications of the biology essay focus.
• The title should be precisely phrased and at the same time based on the hypothesis.
• Avoid jargon for the title to look professional.
• The title should also give the reader a quick understanding of the topic.

2. The content page

This page is located at the beginning of biology papers after the abstract and the title pages. The page shows the numbers as well as the subsections of the essay on biology.

3. The research question

The topics for a biology essay determine the research questions to be used. The research question shows what the article is trying to establish. Keep in mind that the question is not the same as the title.

• The question in motion should be highlighted in the introduction. The content page will give the reader an understanding of the article.
• The question should introduce new ideas as well.

4. The introduction

The biology essay introduction is the most crucial part of the article, as it will determine whether the readers will want to read more of the piece or not.

• The introduction for a biology essay should illustrate what is being argued in the article.
• For an introduction to be successful, the contents need to be brief and accurate.
• Another professional way how to start a biology essay introduction is by illustrating how you reached the focus of the research.
• The introduction should also contain the references that were accessed.
• What might be revealed in the study should also be highlighted in the opening section.

5. The investigation

The study section gives you the chance of illustrating how the data was selected as well as its reliability.

• You need to clearly explain, describe and justify the choice of collecting primary data.
• Don’t forget to state the sources of the experiments. The method used should be detailed. Someone would want to repeat the same procedure.
• Ensure that the investigations are ethical and not cruel.

6. The analysis

• The body is the meat of the literature essay. The body covers most of the article. A common way how to write a biology essay body is by using at least three paragraphs.
• The biology essay tips need to be relevant to the research question being discussed. The points should also give assertion to the reader.
• Highlight the biology essay prompts as well. Elaborate on how the ideas have been used to support the question in the essay on biology.
• For an effective essay on biology writing, discuss each point in its paragraph. This technique will give you the chance of exhausting the points.

7. The biology essay conclusion

The end of the article should be firm and sum up the whole article. The conclusion is a formal way how to conclude a biology essay. The conclusion restates the points for emphasis and makes the final argument clear. This section also gives you the chance of drawing connections between the points and questions being discussed. The conclusion for a biology essay also gives room for you to show your engagement with the essay on biology on a personal ground. The conclusion should be in a position of reformulating a new hypothesis as well as comparing the content to the secondary sources used. You can finish up the biology essay by stating the significance of the statistical tests done.

8. The references

Making citations is an essential issue in biology papers. There are quite some formatting and citation styles ranging from APA to MLA.  You should, therefore, be keen on the style specified. Referencing styles depends on the academic discipline that one is in. For instance, APA is used in psychology, education, and sciences

Archetti M 2000. The origin of autumn colors by coevolution. Journal of Theoretical Biology, 205: 625–63

9. Sources for essay choice

Sources can either be secondary or primary. The primary source refers to any work that can be accessed originally. The secondary source refers to the works that have been original, but have been produced by another person. Examples of secondary sources include books , encyclopedias, and journals among other recreated works. You can use both the primary and secondary data to make your biology paper a success.

10. Finalizing the Essay

Once the essay on biology has been written, a revision is necessary to ensure the content is in order. A standard method of review is proofreading. Proofreading gives you the chance to analyze your work and correct errors that are avoidable.

• April 25, 2023
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Mastering A Level Biology Essays: Smart Tips and Unbeatable Examples

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Introduction

A Level Biology is a challenging but rewarding course that covers a wide range of topics, from DNA and genetic inheritance to ecosystems and biodiversity. The key to success in this subject lies in understanding and applying the core principles of Biology and expressing your understanding in well-structured, coherent essays. In this article, we will provide you with some essential tips for writing outstanding A Level Biology essays, as well as presenting clear examples to help you master the essay-writing process.

• Understand the essay question

The first and most important step in writing an A Level Biology essay is to clearly understand the question. Break down the question into its key terms and implications, and ensure you comprehend what the examiner is asking you to discuss. Make a note of any key words or phrases that should feature in your essay, as these will help you structure your response and ensure you cover all the necessary points.

• Plan your essay

Before you begin writing your essay, take the time to plan your response. Create an outline that maps out the main points you want to make, as well as the order in which you will discuss them. This will enable you to develop a logical and coherent argument that addresses all the key aspects of the question.

• Include an engaging introduction

An effective introduction is crucial to grabbing the reader’s attention and setting the tone for your essay. Begin with a general statement that links to the essay question, and then narrow down your focus to present your main argument or line of inquiry. Finish your introduction with a clear thesis statement, which outlines the central points you will cover in your essay, demonstrating a solid understanding of the topic.

Example: The discovery of DNA and the subsequent advancements in genetic research have proven instrumental in understanding the role of genetics ininheritance of traits and diseases. This essay will discuss the role of genetic inheritance in the development of several human diseases, namely: Cystic Fibrosis, Huntington’s disease, and Alzheimer’s disease, as well as the ethical implications surrounding genetic testing and treatment.

• Use specific examples to support your arguments

In A Level Biology essays, it is essential to provide examples that demonstrate your understanding of the material and support your claims. Try to include a range of examples from different areas of the subject to show that you have a comprehensive and in-depth understanding of the course material.

Example: Cystic Fibrosis is an example of a genetic disorder caused by a mutation in the CFTR gene, which results in thick and sticky mucus production in affected individuals. This condition can lead to respiratory and digestive complications, illustrating the significant impact of genetic inheritance on an individual’s health.

• Synthesize information from multiple sources

To demonstrate a high level of understanding, A Level Biology essays should integrate information from various sources, such as class notes, textbooks, and scientific articles. Be sure to support your ideas with specific references to the source material, and use your own words to explain the concepts in a clear and concise manner.

• Address counterarguments and controversies

In any scientific field, there are often debates and controversies surrounding key concepts and theories. To show a comprehensive grasp of the subject matter, be sure to address counterarguments and discuss opposing viewpoints in your essay.

Example: While genetic testing for diseases such as Huntington’s has the potential to provide valuable information for individuals at risk, there are ethical concerns about the potential misuse of genetic information by employers, insurance companies, and even government entities. Weighing the benefits of genetic testing and treatment against these ethical concerns is an ongoing debate within the scientific community.

• Write a strong conclusion

To wrap up your essay, restate your main argument and summarize the key points you have made. Provide a clear and concise conclusion that demonstrates the significance of your argument and its implications for the broader field of Biology.

Example: In conclusion, the role of genetic inheritance in human diseases, as illustrated by Cystic Fibrosis, Huntington’s disease, and Alzheimer’s disease, underscores the immense potential of genetic research to improve our understanding of human health. However, as we continue to advance our knowledge and develop new treatments and testing methods, it is crucial that we remain conscious of the ethical implications that come with such advancements in order to protect individuals’ rights and liberties.

• Proofread and edit your essay

Finally, make sure you thoroughly proofread and edit your essay to correct any grammar, spelling, or punctuation errors, and to ensure that your argument flows smoothly and logically. Consider asking a friend or peer to review your essay and provide feedback – a fresh perspective can help you identify areas for improvement that you may have overlooked.

In summary, mastering A Level Biology essays involves understanding the essay question, planning a clear and logical response, using specific examples and evidence, synthesizing information from multiple sources, addressing counterarguments and controversies, and crafting a compelling introduction and conclusion. By following these steps and using the examples provided, you will be well on your way to delivering high-quality, insightful essays that demonstrate an excellent understanding of the complex and fascinating world of Biology.

Good luck, and happy essay writing!

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Tips on How to Write a Biology Essay: Learn from the Example of Jellyfish Essay

How to Write a Biology Essay

In this article, we will guide you on how to write a perfect biology essay from scratch. You’ll find various tips to help you excel in writing your essay and creating a paper worth the highest grades. We also prepared a jellyfish essay example for you, so it can be easier to enhance all the specifics and structure of this kind of paper.

What is Biology Essay

A biology essay is a student-written work where you present arguments and ideas about a particular biological topic. The essay on biology can take different forms like argumentative, cause-and-effect, descriptive, detailed analysis, or ‘how-to’ instruction, depending on the professor’s guidelines and writer’s preferences. 

A descriptive paper can explain a biological subject, while an argumentative one provides evidence to support a point of view. It’s up to you to choose which type is more suitable for the topic you’re writing about. The most common type is a cause-and-effect essay explaining an event’s reasons and consequences. 

How to Craft a Perfect Essay About Biology

Writing is an art form that requires time and effort. But if you prefer someone else to write the paper for you, you can just text the experts, ‘ do my homework for me ,’ and consider it done. 

Here is the step by step instruction to organize the process for desired results. 

Choose Your Biology Essay Topic

To get a good grade:

• make your paper informative and enjoyable by choosing a topic you wish to explore. 
• Use a brainstorming technique to generate 30-50 options for biology essay topics and research to create a shortlist. 
• Keep a notebook to jot down your ideas.

Choose a Question for Research

When writing a biology essay, use a scientific approach by selecting a research question related to your topic. Always avoid overly complex or apparent questions. You can also text our profs ‘ write my research paper ,’ and it can be done in a blink.

Create an Outline

Always have a clear plan when writing biology essays while starting a paper. Use a 5-paragraph structure with an outline to keep your main idea and arguments organized. Use any format that works best for you and adjust as needed. Discard any ideas that don’t fit your research question.

Use a Strong Thesis Statement

The introduction should end with a strong thesis statement synthesizing the overall essay, conveying the research question and your point of view. The paper is ineffective without a clear thesis, as readers may not understand your position.

Use Citation and References

Include a list of references in your academic papers, such as biology essays, to avoid plagiarism and provide data sources. Use the appropriate citation style, like APA or CSE, and consult a guide for requirements.

How to Structure a Biology Essay

Ensure your essay has an attention-grabbing introduction, a detailed body, and a solid conclusion with distinct sections. Use around seven paragraphs for the main body, adjusting as needed for the required word count.

Biology Essay Introduction

In the introduction of your essay about biology, showcase your expertise by providing a brief background of the topic and stating the essay’s objective. For a research paper, explain why the study is relevant. Make sure the reader understands the essence of your subject.

The body section of your essay on biology should focus on supporting and defending your thesis statement. To achieve this, make a list of essential points to cover and address each one step by step. Starting a new paragraph for each point ensures neatness and a continuous flow. 

In conclusion, restate your thesis statement and summarize supporting points to solidify your arguments. Avoid introducing new concepts, and leave a lasting impression on your instructor.

Jellyfish Essay - Example of a Biology Essay About a Fascinating Creature of the Ocean

Jellyfish, also known as jellies, are incredible creatures of the ocean. They’re members of the phylum Cnidaria, including corals and sea anemones. You can find jellyfish in every ocean around the globe, from the surface to the depths of the sea. 

Do you know what shape the jellyfish body has?! It’s one of their most unique features. Their bell-shaped body comprises a soft, jelly-like substance called mesoglea, found between two cellular layers. The outer layer of cells, the epidermis, is thin and flexible, while the inner layer, the gastrodermis, contains the jellyfish’s digestive system. At the bottom of the bell is the mouth, surrounded by tentacles armed with stinging cells called nematocysts. 

The jellyfish tentacles consist of venom-filled sacs, which can be potentially dangerous and life-threatening. Considering the severity of its sting, researchers have gathered information on how to treat it effectively. Use thick clothing, tweezers, sticks, or gloves to alleviate the sting. It’s crucial to avoid touching the sting with bare skin since the venom can cause severe harm. Always dispose of the tool used for removing the sting to prevent re-stinging. 

Jellyfish are creatures that feed on small fish and other tiny marine organisms. They capture their prey using the tentacles and bring it to their mouth. Once the food is inside the jellyfish, it’s broken down by digestive enzymes and absorbed into the gastrovascular cavity. 

An exciting thing about jelly is its life cycle. They go through several stages of development, starting as a tiny, free-swimming larva and then growing into a polyp. The polyp stage is stationary, and the jellyfish attaches itself to a surface using a sticky pad. During this stage, the jellyfish reproduces asexually, creating clones of itself. These clones then break off from the polyp and develop into the familiar bell-shaped body of the adult jellyfish. 

Jellyfish play an essential role in the ocean’s ecosystem too. They’re a food source for many marine creatures, including sea turtles and some fish species. They also help to control the population of tiny marine animals by feeding on them, and their waste products contribute to the nutrient cycle in the ocean.

However, jellyfish populations can sometimes explode and become a nuisance. This phenomenon mostly occurs when their natural predators are eliminated from the ecosystem or when water conditions, like temperature and salinity, are conducive for jellyfish growth. In cases where jellyfish populations reach excessive levels, they can clog fishing nets and interfere with other human activities in the ocean.

Jellyfish really are stunning creatures of the ocean. They’re diverse, with many different species, and are essential to the marine ecosystem. While they can sometimes become a nuisance, they’re vital to the ocean’s food web and nutrient cycle. Studying jellyfish can give us a greater understanding of the complex and interconnected systems that make up our oceans.

Practical Tips for Creating Perfect Academic Papers

Developing writing skills is crucial for your academic success regardless of your major. Check out these tips we provided for improving your writing. But if you aren't fond of writing, you can easily hand it to professionals by saying, ‘ do homework for me .’

Search for Samples or Examples

To improve your writing, analyze examples of well-written biology essays or research papers. Although not all online samples are perfect, they can still provide insights into what works and what doesn’t. However, avoid plagiarism and ensure your paper is original by presenting fresh ideas and a unique perspective. 

Read Whenever You Can

Develop your writing skills by reading widely and extensively. Look for biology papers in scientific journals, websites, or books. Don’t forget to take notes on interesting points that you can use in your papers later.

Practice Makes Perfect

Don’t expect to write a perfect paper on your first try, so take every opportunity to practice your writing. Find a mentor if needed and use online resources to learn from your mistakes and improve your skills.

Always Organize Your Writing Process

Organize your work process instead of waiting for inspiration by defining stages, scheduling time for each task, and eliminating distractions. Don’t wait for mood to write an essay about biology; use different strategies to overcome writer’s block.

Proofread and Get Other Feedback

It’s hard to assess your own work accurately. Seek feedback from peers or instructors to identify strengths and weaknesses to improve upon. Don’t wait for your professor’s feedback to know if your biology essay is good. 

Interesting Biology Essay Topics from Our Experts to Practice Your Writing

In this paragraph, we listed different biology essay topics from which you can choose your preferred one and practice writing to excel in your academic papers.

• A jellyfish - my favorite creature
• Facts about animal behavior
• Biodiversity conservation
• Chemical Ecology
• Impacts of air pollution
• Acid Rain’s impact on wildlife
• The greenhouse effect
• Causes of global warming
• Effects of climate change on nature
• Ways to avoid water pollution

These are interesting topics and also some of the most significant environmental problems. Choose the one you like and practice.

Final Thoughts

This article provides tips that will definitely make your writing process easier and more effective. Adjust these tips while writing your biology paper and structure it as we did in the jellyfish essay example. But if you still prefer a professional to do it for you, contact us by writing ‘ do my research paper ,’ and our experts will handle it.

• Plagiarism Report
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Free Biology Essay Examples & Writing Tips

Don’t know what to write about in your essay on biology? Looking for good biology essay examples for inspiration? This article has all you need!

A biology essay is a type of academic paper that focuses on a particular topic of biology. It can discuss animal life, cycles in biology, or a botanic subject. You will need to demonstrate your critical thinking skills and provide relevant evidence to support your perspective.

On this page, you will find examples of biology essays. You will also find here tips and topics prepared by our experts . They can assist you in nailing your short or extended essay.

Areas of Research for Biology Essays

If you’ve been assigned to write a biology essay, you probably know which area of research you have to choose. However, it might be beneficial to explore other available scopes. It’s useful for both interdisciplinary study and the cases when you are free to pick your area of research. In this section, let’s figure out what you can study in biology.

Here are biological areas of research you should be familiar with:

• Cancer Biology studies this type of disease to prevent, detect, diagnose and cure it. The ultimate goal of such biologists is to eliminate cancer.
• Cell Biology is a branch that studies the structure, function, and behavior of cells. Here, biologists study healthy and sick cells to produce vaccines, medication, etc.
• Biochemistry is an application of chemistry to the study of biological processes on cell and molecular levels. It is a cross-discipline between chemistry and biology. The focus is on the chemical processes of living organisms.
• Computation Biology is a study of biological data that develops algorithms and models to understand biological systems. Here, scientists either work for institutions or research for private enterprises.
• Genetics is an area that focuses on the study of genes and genetic variations for health benefits. It looks at the way DNA affects certain diseases.
• Human Disease is an area within which scientists study different diseases. The field covers cancer, developmental disorders, disease genes, etc.
• Immunology is a branch of biology that focuses on immunity. Immunologists look at the way the body responds to viruses as a way to protect the organism.
• Microbiology studies all living organisms that are too small for our eye to see. It includes bacteria, viruses, fungi, and other microorganisms.
• Neurobiology is the study of the nervous system. Biologists examine the way the brain works and look into brain illnesses.
• Stem Cell and Developmental Biology seeks to examine how the processes behind stem cell’s ability transform cells. The biologists in this area use the power of stem cells to model human illnesses.

Essay on Biology: Writing Tips

Want to know how to start a biology essay? Wondering about the best way to write your essay on biology? Then check out the following tips.

When you’re writing about biology, pay attention to the following features:

• Introduction . Just as in any other form of academic writing, the first section of your paper introduces the subject. Here, explain why your ideas are relevant to biology as a science.
• Thesis Statement. The final one or two sentences of the first paragraph should include your original hypothesis and experiment. You will be proving them in the main body. You do not have to include the results as the reader will encounter them later. If you’re struggling with this part, try our thesis generator .
• Main Body. In this part, write about all the experiments in detail. Often, teachers require to include visual aid to prove your point. For Zoology, Anatomy, Botany, it is pretty easy to find some photos and illustrations.
• Conclusion. Here, restate your thesis. Reemphasize the most critical aspects described in the main body. You can do it by using our summarizing tool . The goal of this last paragraph is to leave an everlasting impression on the reader.

Thank you for reading our article. We hope you found it helpful. Share it with your class peers who also study biology. Additionally, have a look at the biological essay examples below.

808 Best Essay Examples on Biology

Grass and its importance, the benefits of animals to humans essay.

• Words: 1166

The Effect of Temperature on Amylase Activity

• Words: 1293

Biology of Grasses: Description and Importance

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Ubiquity of Microorganisms

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Seed Germination Experiment: Results and Discussion

Bronfenbrenner’s bioecological system theory.

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Anaerobic Respiration and Its Applications

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Mung Seed Germination Patterns under Varying pH Values

Botany and taxonomy of the onion.

• Words: 2414

Strawberries History

• Words: 1484

Pets and people

Dark or light skin: advantages and disadvantages, nanobiotechnology, its advantages and disadvantages, similarities and differences of photosynthesis and cellular respiration, mitosis and meiosis in onion root tip.

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Lemon, Its Origin and Production

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Characteristics of Adult Development

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Eukaryotic and Prokaryotic Cells: Key Differences

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Mitosis in onion root and whitefish blastula, a study of the brine shrimps and their natural environment.

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Different ecosystems and living things, botany and zoology in the classroom.

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Importance of the Brain in Human Body

Substrate concentration and rate of enzyme reactions.

• Words: 1730

Molecular Biology. Production of pET28b and EGFP Clones

• Words: 4609

Cells, Tissues, and Major Organs Systems

• Words: 2269

A Brief Discussion of Animal and Plant Cells

Olfactics and its importance for living beings.

• Words: 1446

The Insect Effect on Human Life

Cane toad: introduction and threat.

• Words: 1018

The Characteristics and Importance of Nervous System

• Words: 1705

Forensic Procedures: Hairs and Fibres

• Words: 2067

The Digestive System in the Human Body

The function and structures of the human heart, the integumentary and the skeleton system.

• Words: 1100

Dugesia, a Planarian With Its Peculiar Characteristics

• Words: 3207

Photosynthesis As A Biological Process

The effect of different shampoos on the bacteria growth.

• Words: 1737

Marine Life in United Arab Emirates

• Words: 1474

Falling in Love as Part of Natural Selection

• Words: 1085

Microbiology and Its Role in Healthcare

Seed germination and osmosis.

• Words: 1127

Ethnobotanical Uses of Plants

• Words: 1938

How SCOBY Changes Its Environment: Lab Experiment

• Words: 1214

Introduction to the Nervous System

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• Words: 1612

Consequences of Orange Juice on the Germination of Mung Bean Seeds

Life in the bottom of the ocean and its protection.

• Words: 1529

Vertical Stratification

Basic and applied biology: key differences, researching the physiology of the eye.

• Words: 1122

Microbiological Studies, Applications, and Current Discoveries

Brine shrimp habitat, the genus rosa’s adaptation to the environment.

• Words: 1144

Invertase Enzyme: Description and Role

• Words: 1151

History Of Biotechnology

• Words: 1908

Cell Culture and Biomedical Applications

• Words: 1485

Ubiquity of Bacteria: Laboratory Activity

• Words: 1496

Rosalind Franklin: The Discovery of the DNA Structure

Food macromolecules – lipids, carbohydrates, and proteins, the importance of sleeping and dreaming, climate change and threat to animals, how the human eye works analogous to a camera, the characteristics and importance of chickpeas.

• Words: 3665

Physiology of Uromastyx Aegyptia

• Words: 1340

Natural Sciences. The Phenol Red Broth Test Experiment

• Words: 1156

Corn Plant’s Developmental Stages

A study of “escherichia coli”, melanin theory as a pseudoscientific claim.

• Words: 1645

Biology: Analysis of Egg Experiment

Non-trophic interaction in marine species, microbial growth and effect of ph on it.

• Words: 1330

Biodiversity, Interdependency: Threatened and Endhangered Species

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Soil impact on the growth of plants.

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Reproductive Isolation and Its Potential Effects

Sleep may be nature’s time management tool by carey, venus flytraps and arthropods: plant-animal interactions.

• Words: 2088

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Critical Thinking Questions

Why is it advantageous for the cell membrane to be fluid in nature?

Why do phospholipids tend to spontaneously orient themselves into something resembling a membrane?

How can a cell use an extracellular peripheral protein as the receptor to transmit a signal into the cell?

Which explanation identifies how the following affect the rate of diffusion: molecular size, temperature, solution density, and the distance that must be traveled?

Why does water move through a membrane?

Both of the regular intravenous solutions administered in medicine, normal saline and lactated Ringer’s solution, are isotonic. Why is this important?

Describe two ways that decreasing temperature would affect the rate of diffusion of molecules across a cell’s plasma membrane.

A cell develops a mutation in its potassium channels that prevents the ions from leaving the cell. If the cell’s aquaporins are still active, what will happen to the cell? Be sure to describe the tonicity and osmolarity of the cell.

Where does the cell get energy for active transport processes?

How does the sodium-potassium pump contribute to the net negative charge of the interior of the cell?

Glucose from digested food enters intestinal epithelial cells by active transport. Why would intestinal cells use active transport when most body cells use facilitated diffusion?

The sodium/calcium exchanger (NCX) transports sodium into and calcium out of cardiac muscle cells. Describe why this transporter is classified as secondary active transport.

Why is it important that there are different types of proteins in plasma membranes for the transport of materials into and out of a cell?

Why do ions have a difficult time getting through plasma membranes despite their small size?

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Your chance of acceptance, your chancing factors, extracurriculars, how to write a 'why biology' major essay.

I'm a high school junior applying to college soon, and I'm working on my application essays. One question asks me to explain why I'm interested in majoring in Biology. Can you guys suggest some elements I should include in the essay? How can I make my passion for biology stand out?

When writing a 'Why Biology' major essay, it's essential to focus on your personal experiences, passion, and future goals related to the subject. Here are some elements you can include in the essay to make it stand out:

1. Personal exposure: Highlight any experiences that sparked your interest in biology. Did you have a inspiring biology teacher or an exciting lab experiment? Maybe you joined a biology club or participated in a science fair project? Connect these experiences to your passion for the subject.

2. Academic achievements: Reflect on any notable academic accomplishments you have had in biology, such as high grades, taking AP or advanced level courses, or receiving awards/recognitions for your work in the subject. This shows your dedication and success within the field.

3. Extracurricular activities: Discuss any relevant extracurricular activities showcasing your involvement and commitment to biology, such as internships, volunteering, research projects, or summer programs related to the subject. Elaborate on how these experiences deepened your passion and understanding of biology.

4. Specific topics of interest: Describe the areas within biology that you find particularly fascinating or captivating, such as genetics, molecular biology, neuroscience, or ecology. By narrowing the focus, you demonstrate a clear understanding of the discipline and its subfields.

5. How your passion has evolved: Explain how your interest in biology started and the ways it has grown over time. This shows your commitment to understanding the subject on a deeper level, and it will allow the admissions committee to see how you've continued to explore and expand your passion for biology.

6. Future plans and goals: Talk about your long-term career aspirations or academic goals in biology and how majoring in the subject will help you achieve them. For example, you could mention your desire to pursue research, medicine, biotechnology, or conservation. Connecting your major to future plans showcases your motivation and seriousness about studying biology.

7. College-specific resources: Mention specific programs, faculty, research opportunities, or facilities that the college you're applying to offers within the biology department. Explain how these resources will help you reach your academic goals and deepen your passion for the subject.

For more details on writing a "Why This Major?" essay, check out this CollegeVine article: https://blog.collegevine.com/why-this-major-college-essay

In conclusion, make sure to focus on your personal experiences, achievements, and aspirations regarding biology, and convey your genuine enthusiasm and dedication to the subject. By incorporating these various elements into your essay, you'll demonstrate a well-rounded understanding of and passion for biology, which will make your essay stand out.

About CollegeVine’s Expert FAQ

CollegeVine’s Q&A seeks to offer informed perspectives on commonly asked admissions questions. Every answer is refined and validated by our team of admissions experts to ensure it resonates with trusted knowledge in the field.

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Sat / act prep online guides and tips, the complete ib extended essay guide: examples, topics, and ideas.

International Baccalaureate (IB)

IB students around the globe fear writing the Extended Essay, but it doesn't have to be a source of stress! In this article, I'll get you excited about writing your Extended Essay and provide you with the resources you need to get an A on it.

If you're reading this article, I'm going to assume you're an IB student getting ready to write your Extended Essay. If you're looking at this as a potential future IB student, I recommend reading our introductory IB articles first, including our guide to what the IB program is and our full coverage of the IB curriculum .

IB Extended Essay: Why Should You Trust My Advice?

I myself am a recipient of an IB Diploma, and I happened to receive an A on my IB Extended Essay. Don't believe me? The proof is in the IBO pudding:

If you're confused by what this report means, EE is short for Extended Essay , and English A1 is the subject that my Extended Essay topic coordinated with. In layman's terms, my IB Diploma was graded in May 2010, I wrote my Extended Essay in the English A1 category, and I received an A grade on it.

What Is the Extended Essay in the IB Diploma Programme?

The IB Extended Essay, or EE , is a mini-thesis you write under the supervision of an IB advisor (an IB teacher at your school), which counts toward your IB Diploma (learn more about the major IB Diploma requirements in our guide) . I will explain exactly how the EE affects your Diploma later in this article.

For the Extended Essay, you will choose a research question as a topic, conduct the research independently, then write an essay on your findings . The essay itself is a long one—although there's a cap of 4,000 words, most successful essays get very close to this limit.

Keep in mind that the IB requires this essay to be a "formal piece of academic writing," meaning you'll have to do outside research and cite additional sources.

The IB Extended Essay must include the following:

• A title page
• Contents page
• Introduction
• Body of the essay
• References and bibliography

Additionally, your research topic must fall into one of the six approved DP categories , or IB subject groups, which are as follows:

• Group 1: Studies in Language and Literature
• Group 2: Language Acquisition
• Group 3: Individuals and Societies
• Group 4: Sciences
• Group 5: Mathematics
• Group 6: The Arts

Once you figure out your category and have identified a potential research topic, it's time to pick your advisor, who is normally an IB teacher at your school (though you can also find one online ). This person will help direct your research, and they'll conduct the reflection sessions you'll have to do as part of your Extended Essay.

As of 2018, the IB requires a "reflection process" as part of your EE supervision process. To fulfill this requirement, you have to meet at least three times with your supervisor in what the IB calls "reflection sessions." These meetings are not only mandatory but are also part of the formal assessment of the EE and your research methods.

According to the IB, the purpose of these meetings is to "provide an opportunity for students to reflect on their engagement with the research process." Basically, these meetings give your supervisor the opportunity to offer feedback, push you to think differently, and encourage you to evaluate your research process.

The final reflection session is called the viva voce, and it's a short 10- to 15-minute interview between you and your advisor. This happens at the very end of the EE process, and it's designed to help your advisor write their report, which factors into your EE grade.

Here are the topics covered in your viva voce :

• A check on plagiarism and malpractice
• Your reflection on your project's successes and difficulties
• Your reflection on what you've learned during the EE process

Your completed Extended Essay, along with your supervisor's report, will then be sent to the IB to be graded. We'll cover the assessment criteria in just a moment.

We'll help you learn how to have those "lightbulb" moments...even on test day!  

What Should You Write About in Your IB Extended Essay?

You can technically write about anything, so long as it falls within one of the approved categories listed above.

It's best to choose a topic that matches one of the IB courses , (such as Theatre, Film, Spanish, French, Math, Biology, etc.), which shouldn't be difficult because there are so many class subjects.

Here is a range of sample topics with the attached extended essay:

• Biology: The Effect of Age and Gender on the Photoreceptor Cells in the Human Retina
• Chemistry: How Does Reflux Time Affect the Yield and Purity of Ethyl Aminobenzoate (Benzocaine), and How Effective is Recrystallisation as a Purification Technique for This Compound?
• English: An Exploration of Jane Austen's Use of the Outdoors in Emma
• Geography: The Effect of Location on the Educational Attainment of Indigenous Secondary Students in Queensland, Australia
• Math: Alhazen's Billiard Problem
• Visual Arts: Can Luc Tuymans Be Classified as a Political Painter?

You can see from how varied the topics are that you have a lot of freedom when it comes to picking a topic . So how do you pick when the options are limitless?

How to Write a Stellar IB Extended Essay: 6 Essential Tips

Below are six key tips to keep in mind as you work on your Extended Essay for the IB DP. Follow these and you're sure to get an A!

#1: Write About Something You Enjoy

You can't expect to write a compelling essay if you're not a fan of the topic on which you're writing. For example, I just love British theatre and ended up writing my Extended Essay on a revolution in post-WWII British theatre. (Yes, I'm definitely a #TheatreNerd.)

I really encourage anyone who pursues an IB Diploma to take the Extended Essay seriously. I was fortunate enough to receive a full-tuition merit scholarship to USC's School of Dramatic Arts program. In my interview for the scholarship, I spoke passionately about my Extended Essay; thus, I genuinely think my Extended Essay helped me get my scholarship.

But how do you find a topic you're passionate about? Start by thinking about which classes you enjoy the most and why . Do you like math classes because you like to solve problems? Or do you enjoy English because you like to analyze literary texts?

Keep in mind that there's no right or wrong answer when it comes to choosing your Extended Essay topic. You're not more likely to get high marks because you're writing about science, just like you're not doomed to failure because you've chosen to tackle the social sciences. The quality of what you produce—not the field you choose to research within—will determine your grade.

Once you've figured out your category, you should brainstorm more specific topics by putting pen to paper . What was your favorite chapter you learned in that class? Was it astrophysics or mechanics? What did you like about that specific chapter? Is there something you want to learn more about? I recommend spending a few hours on this type of brainstorming.

One last note: if you're truly stumped on what to research, pick a topic that will help you in your future major or career . That way you can use your Extended Essay as a talking point in your college essays (and it will prepare you for your studies to come too!).

#2: Select a Topic That Is Neither Too Broad nor Too Narrow

There's a fine line between broad and narrow. You need to write about something specific, but not so specific that you can't write 4,000 words on it.

You can't write about WWII because that would be a book's worth of material. You also don't want to write about what type of soup prisoners of war received behind enemy lines, because you probably won’t be able to come up with 4,000 words of material about it. However, you could possibly write about how the conditions in German POW camps—and the rations provided—were directly affected by the Nazis' successes and failures on the front, including the use of captured factories and prison labor in Eastern Europe to increase production. WWII military history might be a little overdone, but you get my point.

If you're really stuck trying to pinpoint a not-too-broad-or-too-narrow topic, I suggest trying to brainstorm a topic that uses a comparison. Once you begin looking through the list of sample essays below, you'll notice that many use comparisons to formulate their main arguments.

I also used a comparison in my EE, contrasting Harold Pinter's Party Time with John Osborne's Look Back in Anger in order to show a transition in British theatre. Topics with comparisons of two to three plays, books, and so on tend to be the sweet spot. You can analyze each item and then compare them with one another after doing some in-depth analysis of each individually. The ways these items compare and contrast will end up forming the thesis of your essay!

When choosing a comparative topic, the key is that the comparison should be significant. I compared two plays to illustrate the transition in British theatre, but you could compare the ways different regional dialects affect people's job prospects or how different temperatures may or may not affect the mating patterns of lightning bugs. The point here is that comparisons not only help you limit your topic, but they also help you build your argument.

Comparisons are not the only way to get a grade-A EE, though. If after brainstorming, you pick a non-comparison-based topic and are still unsure whether your topic is too broad or narrow, spend about 30 minutes doing some basic research and see how much material is out there.

If there are more than 1,000 books, articles, or documentaries out there on that exact topic, it may be too broad. But if there are only two books that have any connection to your topic, it may be too narrow. If you're still unsure, ask your advisor—it's what they're there for! Speaking of advisors...

Don't get stuck with a narrow topic!

#3: Choose an Advisor Who Is Familiar With Your Topic

If you're not certain of who you would like to be your advisor, create a list of your top three choices. Next, write down the pros and cons of each possibility (I know this sounds tedious, but it really helps!).

For example, Mr. Green is my favorite teacher and we get along really well, but he teaches English. For my EE, I want to conduct an experiment that compares the efficiency of American electric cars with foreign electric cars.

I had Ms. White a year ago. She teaches physics and enjoyed having me in her class. Unlike Mr. Green, Ms. White could help me design my experiment.

Based on my topic and what I need from my advisor, Ms. White would be a better fit for me than would Mr. Green (even though I like him a lot).

The moral of my story is this: do not just ask your favorite teacher to be your advisor . They might be a hindrance to you if they teach another subject. For example, I would not recommend asking your biology teacher to guide you in writing an English literature-based EE.

There can, of course, be exceptions to this rule. If you have a teacher who's passionate and knowledgeable about your topic (as my English teacher was about my theatre topic), you could ask that instructor. Consider all your options before you do this. There was no theatre teacher at my high school, so I couldn't find a theatre-specific advisor, but I chose the next best thing.

Before you approach a teacher to serve as your advisor, check with your high school to see what requirements they have for this process. Some IB high schools require your IB Extended Essay advisor to sign an Agreement Form , for instance.

Make sure that you ask your IB coordinator whether there is any required paperwork to fill out. If your school needs a specific form signed, bring it with you when you ask your teacher to be your EE advisor.

#4: Pick an Advisor Who Will Push You to Be Your Best

Some teachers might just take on students because they have to and aren't very passionate about reading drafts, only giving you minimal feedback. Choose a teacher who will take the time to read several drafts of your essay and give you extensive notes. I would not have gotten my A without being pushed to make my Extended Essay draft better.

Ask a teacher that you have experience with through class or an extracurricular activity. Do not ask a teacher that you have absolutely no connection to. If a teacher already knows you, that means they already know your strengths and weaknesses, so they know what to look for, where you need to improve, and how to encourage your best work.

Also, don't forget that your supervisor's assessment is part of your overall EE score . If you're meeting with someone who pushes you to do better—and you actually take their advice—they'll have more impressive things to say about you than a supervisor who doesn't know you well and isn't heavily involved in your research process.

Be aware that the IB only allows advisors to make suggestions and give constructive criticism. Your teacher cannot actually help you write your EE. The IB recommends that the supervisor spends approximately two to three hours in total with the candidate discussing the EE.

#5: Make Sure Your Essay Has a Clear Structure and Flow

The IB likes structure. Your EE needs a clear introduction (which should be one to two double-spaced pages), research question/focus (i.e., what you're investigating), a body, and a conclusion (about one double-spaced page). An essay with unclear organization will be graded poorly.

The body of your EE should make up the bulk of the essay. It should be about eight to 18 pages long (again, depending on your topic). Your body can be split into multiple parts. For example, if you were doing a comparison, you might have one third of your body as Novel A Analysis, another third as Novel B Analysis, and the final third as your comparison of Novels A and B.

If you're conducting an experiment or analyzing data, such as in this EE , your EE body should have a clear structure that aligns with the scientific method ; you should state the research question, discuss your method, present the data, analyze the data, explain any uncertainties, and draw a conclusion and/or evaluate the success of the experiment.

#6: Start Writing Sooner Rather Than Later!

You will not be able to crank out a 4,000-word essay in just a week and get an A on it. You'll be reading many, many articles (and, depending on your topic, possibly books and plays as well!). As such, it's imperative that you start your research as soon as possible.

Each school has a slightly different deadline for the Extended Essay. Some schools want them as soon as November of your senior year; others will take them as late as February. Your school will tell you what your deadline is. If they haven't mentioned it by February of your junior year, ask your IB coordinator about it.

Some high schools will provide you with a timeline of when you need to come up with a topic, when you need to meet with your advisor, and when certain drafts are due. Not all schools do this. Ask your IB coordinator if you are unsure whether you are on a specific timeline.

Below is my recommended EE timeline. While it's earlier than most schools, it'll save you a ton of heartache (trust me, I remember how hard this process was!):

• January/February of Junior Year: Come up with your final research topic (or at least your top three options).
• February of Junior Year: Approach a teacher about being your EE advisor. If they decline, keep asking others until you find one. See my notes above on how to pick an EE advisor.
• April/May of Junior Year: Submit an outline of your EE and a bibliography of potential research sources (I recommend at least seven to 10) to your EE advisor. Meet with your EE advisor to discuss your outline.
• Summer Between Junior and Senior Year: Complete your first full draft over the summer between your junior and senior year. I know, I know—no one wants to work during the summer, but trust me—this will save you so much stress come fall when you are busy with college applications and other internal assessments for your IB classes. You will want to have this first full draft done because you will want to complete a couple of draft cycles as you likely won't be able to get everything you want to say into 4,000 articulate words on the first attempt. Try to get this first draft into the best possible shape so you don't have to work on too many revisions during the school year on top of your homework, college applications, and extracurriculars.
• August/September of Senior Year: Turn in your first draft of your EE to your advisor and receive feedback. Work on incorporating their feedback into your essay. If they have a lot of suggestions for improvement, ask if they will read one more draft before the final draft.
• September/October of Senior Year: Submit the second draft of your EE to your advisor (if necessary) and look at their feedback. Work on creating the best possible final draft.
• November-February of Senior Year: Schedule your viva voce. Submit two copies of your final draft to your school to be sent off to the IB. You likely will not get your grade until after you graduate.

Remember that in the middle of these milestones, you'll need to schedule two other reflection sessions with your advisor . (Your teachers will actually take notes on these sessions on a form like this one , which then gets submitted to the IB.)

I recommend doing them when you get feedback on your drafts, but these meetings will ultimately be up to your supervisor. Just don't forget to do them!

The early bird DOES get the worm!

How Is the IB Extended Essay Graded?

Extended Essays are graded by examiners appointed by the IB on a scale of 0 to 34 . You'll be graded on five criteria, each with its own set of points. You can learn more about how EE scoring works by reading the IB guide to extended essays .

• Criterion A: Focus and Method (6 points maximum)
• Criterion B: Knowledge and Understanding (6 points maximum)
• Criterion C: Critical Thinking (12 points maximum)
• Criterion D: Presentation (4 points maximum)
• Criterion E: Engagement (6 points maximum)

How well you do on each of these criteria will determine the final letter grade you get for your EE. You must earn at least a D to be eligible to receive your IB Diploma.

Although each criterion has a point value, the IB explicitly states that graders are not converting point totals into grades; instead, they're using qualitative grade descriptors to determine the final grade of your Extended Essay . Grade descriptors are on pages 102-103 of this document .

Here's a rough estimate of how these different point values translate to letter grades based on previous scoring methods for the EE. This is just an estimate —you should read and understand the grade descriptors so you know exactly what the scorers are looking for.

Here is the breakdown of EE scores (from the May 2021 bulletin):

How Does the Extended Essay Grade Affect Your IB Diploma?

The Extended Essay grade is combined with your TOK (Theory of Knowledge) grade to determine how many points you get toward your IB Diploma.

To learn about Theory of Knowledge or how many points you need to receive an IB Diploma, read our complete guide to the IB program and our guide to the IB Diploma requirements .

This diagram shows how the two scores are combined to determine how many points you receive for your IB diploma (3 being the most, 0 being the least). In order to get your IB Diploma, you have to earn 24 points across both categories (the TOK and EE). The highest score anyone can earn is 45 points.

Let's say you get an A on your EE and a B on TOK. You will get 3 points toward your Diploma. As of 2014, a student who scores an E on either the extended essay or TOK essay will not be eligible to receive an IB Diploma .

Prior to the class of 2010, a Diploma candidate could receive a failing grade in either the Extended Essay or Theory of Knowledge and still be awarded a Diploma, but this is no longer true.

Figuring out how you're assessed can be a little tricky. Luckily, the IB breaks everything down here in this document . (The assessment information begins on page 219.)

40+ Sample Extended Essays for the IB Diploma Programme

In case you want a little more guidance on how to get an A on your EE, here are over 40 excellent (grade A) sample extended essays for your reading pleasure. Essays are grouped by IB subject.

• Business Management 1
• Chemistry 1
• Chemistry 2
• Chemistry 3
• Chemistry 4
• Chemistry 5
• Chemistry 6
• Chemistry 7
• Computer Science 1
• Economics 1
• Design Technology 1
• Design Technology 2
• Environmental Systems and Societies 1
• Geography 1
• Geography 2
• Geography 3
• Geography 4
• Geography 5
• Geography 6
• Literature and Performance 1
• Mathematics 1
• Mathematics 2
• Mathematics 3
• Mathematics 4
• Mathematics 5
• Philosophy 1
• Philosophy 2
• Philosophy 3
• Philosophy 4
• Philosophy 5
• Psychology 1
• Psychology 2
• Psychology 3
• Psychology 4
• Psychology 5
• Social and Cultural Anthropology 1
• Social and Cultural Anthropology 2
• Social and Cultural Anthropology 3
• Sports, Exercise and Health Science 1
• Sports, Exercise and Health Science 2
• Visual Arts 1
• Visual Arts 2
• Visual Arts 3
• Visual Arts 4
• Visual Arts 5
• World Religion 1
• World Religion 2
• World Religion 3

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160 Biology Essay Topics

For most science courses, assignments are generally lab-based and rarely require much writing. However, all of that changes in biology courses when detailed essays must be written to highlight a student’s understanding of the subject. These essays are highly technical, with specific comments required to meet the factual nature of the subject.

In addition to meeting the factual requirements needed to complete the assignment, biology essays must also be written in a writing style that is informative and authoritative rather than subjective and personal.

These detailed specifics of writing a biology essay can make completing the writing difficult from the very beginning. Fortunately, we’ve created this guide to help students learn how to write a biology essay. In addition, we’ve also included 160 biology essay topics to help inspire the creative writing process.

How to Write a Biology Essay?

Writing a biology essay starts with choosing a topic. If your teacher has not already assigned a specific topic, then students must choose one that is broad enough to find credible resources and specific enough that the research won’t overtake the writing process.

To select a suitable topic for a biology essay, consider the type of biology class you are taking, the current and previous chapters studied, and the overall context of the course. These factors will help you select a topic that is likely to be relevant to your teacher’s needs and to the passing of your course.

Once students have selected a suitable topic, it’s time to research credible resources that will support the subject. To do this successfully, students need to consider the following:

• What information is already known about this topic?
• What topics are related or similar to this topic?
• Who are credible authors that can explain this topic?
• What additional sources will provide me with the information needed to complete this assignment successfully?

For example, if you want to write a biology essay on protein synthesis and its regulation at the transcriptional level, research material would include books, articles, and other written works published by credible authors or publishers. While important, this material isn’t the only type of research that should be completed.

Students may also consider consulting medical and biology dictionaries, textbooks, online research databases such as PubMed or Medline, and professional organizations for biologists to find additional sources. Once the research has been completed, it’s time to create the first draft of the biology essay.

Biology Essay Introduction

Starting an essay is always the same. Students should open with a catchy hook statement that introduces an interesting fact, presents a unique perspective, or raises a thought-provoking question.

Once that sentence has been created, students can use the middle part of the introduction to introduce fundamental concepts and provide background details about the topic.

Once that information has been laid out, and the reader knows the necessary details to make the reading interesting and worthwhile, students should move into the final portion of the introduction that answers the question: WHY is this essay important? This question is answered in the form of a thesis statement that details the essay’s overall purpose.

Biology Essay Body Paragraphs

The body paragraphs of your essay will contain the bulk of your research. Be sure that each body paragraph meets the following requirements:

• One clear idea represented per paragraph or section
• Examples that back up the point of the paragraph
• A clear and logical flow between paragraphs with transition words

Make sure that the body paragraphs only contain information pertinent to the subject or topic. Avoid fluff or filler words and phrases that don’t add any substance or value to the writing.

The number of paragraphs in the body may vary depending on the assignment parameters and the essay style. For example, an essay with a 1000 word limit won’t have as many body paragraphs as an essay with a high word count.

Additionally, a compare and contrast essay that examines the similarities and differences between two or more biology concepts may have more body paragraphs than an argumentative essay.

Biology Essay Conclusion

The final section of a biology essay is the conclusion. In this section, students need to summarize the major points of the essay and the overall purpose for writing it. The thesis should also be re-stated to recap what has been learned from the writing.

In addition to these sentences, students should include a final remark about their research and findings. This might be a thought that ties into the intro or another interesting angle that presents a new way of looking at your topic.

Once the conclusion is completed, students should edit and review their work. Make sure that the essay is free of grammar and spelling mistakes before submitting it for grading.

When it comes to choosing a biology essay topic, it is not always as easy as it seems. For students looking for help with writing a biology essay, we have compiled a list of 160 biology essay topics that will hopefully give you some great ideas.

Biology Essay Topics About Animals

• What is the importance of bats in our ecosystem?
• What is the difference between a domesticated cat and a wildcat?
• How do animals adapt to their environments?
• What are the various types of symbiotic relationships found in nature?
• Which animals have been known to show altruism towards other species?
• What impact does human activity have on animal behavior?
• What are some of the advantages and disadvantages of zoos?
• How do animal brains work?
• What is an animal’s anatomical structure like?
• What are some symbiotic relationships between humans and animals?
• What is the difference between herbivores, carnivores, omnivores, and insectivores?
• Why are having pets important to humans?
• What are the positive and negative impacts of commercial farming on animals?
• Do you think it is acceptable to keep pets in zoos? Why or why not?
• What are some common misconceptions about cats, dogs, rodents, cows, sheep, horses, reptiles/fish/insects?
• How do animal bones support their body structure?
• What are the effects of humans on the natural habitats of animals?
• What are some ways in which animal anatomy is similar to human biology?
• What are some symbiotic relationships found in the animal kingdom?
• Can humans and animals communicate with each other?
• How do different types of animal cells function differently than human cells?
• Why do some animals see better in the dark?
• Explain the circulatory system of cold-blooded animals and how it differs from that of warm-blooded animals.
• What are some examples of mimicry in nature?

Biology Essay Topics About Cellular Biology

• How does cell theory apply to cellular biology?
• What is mitosis, and where does it take place?
• What are the different parts of a cell?
• What is a nucleolus?
• What are the differences between prokaryotic and eukaryotic cells?
• How do viruses affect our cells?
• How does photosynthesis work?
• Why is it important to study cellular biology as a foundation for other disciplines of biology?
• What are the functions of organelles in cells?
• What is anabolism and catabolism?
• How do plants use photosynthesis to produce sugar while animals break down food for energy?
• Describe the process of homeostasis and explain how the human body maintains its internal environment.
• What are the important parts of a cell?
• How do cells reproduce?
• What is the difference between mitosis and meiosis?
• What is the importance of cellular research to humans?
• Explain mitochondria, chloroplasts, and vacuoles in plant cells.
• What are some of the problems with using stem cells in medical research?
• What are the differences between eukaryotic and prokaryotic organisms?
• How do humans reproduce sexually?
• Why is it different to clone plants than animals?
• What are some important functions of membranes in cells?
• What is the significance of mass spectrometry to molecular biology and genetics?
• How do viruses reproduce?
• What are mitochondria responsible for in eukaryotic cells?
• What is the difference between a plasmid and a virus?
• Do you think cloning animals should be allowed? Why or why not?
• What is a cell cycle?
• How do diseases affect the structure and function of cells?
• What are some ethical issues with genetic engineering?
• What is cell division, and how does it work?
• Where does meiosis occur in the body, and what does it accomplish?
• Explain the structure and function of ribosomes in eukaryotic cells.
• What is a cell membrane made up of, and what are its important structural components?
• How do antibiotics affect bacterial cells?
• Do you think cloning humans should be allowed? Why or why not?
• What makes up the cytoskeleton?
• How are molecular structures related to the functions of cells?
• What are some examples of biomolecules necessary for cell function and survival?
• What types of molecules make up an organism’s genome?

Biology Essay Topics About the Ecosystem

• What does the term food web mean?
• Why is it important to study population dynamics in an ecosystem?
• How do humans affect other species and their environments?
• How can we prevent and control invasive species, and why are they so dangerous?
• What effects does pollution have on animals and their habitats?
• How do global warming and climate change affect the ecosystem?
• What are the different types of animals found in ecosystems?
• What happens to an ecosystem when one species becomes extinct?
• What is the difference between biotic and abiotic components of an ecosystem?
• How do humans feed off other species to survive?
• Describe how the r-selected life strategy works.
• What are some examples of symbiosis found in nature?
• How does biodiversity affect the structure, function, and survival of ecosystems?
• How does the stability of an ecosystem depend on biodiversity?
• What are trophic levels, and how do they function to maintain the structure of ecosystems?
• Why are invasive species dangerous?
• How do global climate changes and human activities affect the biodiversity of ecosystems?
• What types of organisms thrive in wetlands?
• How do humans benefit from studying ecosystems?
• What ecosystems are best suited to rapid climate change?

Biology Essay Topics About Evolution

• Is evolution strictly a scientific theory, or is it also valid spiritually?
• Why is research about the evolution of life important to our understanding of the past?
• What are some examples of convergent evolution?
• How does natural selection contribute to evolution?
• Why is it important for people to understand evolution and its role in biology?
• What are some benefits that humans enjoy thanks to evolution?
• How do mass extinctions impact the evolution of different species?
• How does a mutation affect a population’s gene pool and diversity?
• Explain the core principles of Darwin’s theory of evolution.
• How does an organism’s ability to respond to environmental changes contribute to its rate of evolution?
• What is polyphyletic evolution?
• What are some examples of vestigial traits in humans and other species?
• How do eco-evolutionary dynamics play a role in evolution?
• Do you think that past mass extinction events had an impact on evolution? Why or why not?
• What are some benefits humans enjoy thanks to evolution by natural selection?
• How could modern-day diets affect the evolutionary growth of humans?
• What animals have had evolutionary changes based on threats to their diets?
• What evolutionary response makes for the best camouflage?
• What types of traits can be used to differentiate between closely related species?
• What are the main factors that prevent a population from evolving?
• How is artificial selection different from natural selection?
• Why do scientists still debate about evolutionary theory despite overwhelming evidence supporting it?
• What are some examples of convergent evolution in nature, and how do they function as an adaptation?
• Why is research about the evolution of life important to understanding the past?

Biology Essay Topics About Genetics

• What is genetic drift, and how can it lead to changes in a population over time?
• How do the different parts of DNA interact with each other?
• How are dominant and recessive traits identified?
• What are some examples of genetic disorders?
• What causes Down syndrome, and how is it diagnosed in children?
• How does natural selection act on mutations to create variation in a population?
• Can scientists use DNA testing to learn about our ancestors’ migratory patterns and where they lived?
• How can animal migration help us to better understand genetics?
• Define molecular genetics and explain how it relates to classical and Mendelian genetics.
• What is the Hardy-Weinberg equilibrium, and why is it important in population genetics?
• Do you believe that scientists should clone human beings? Why or why not?
• Why are dominant traits sometimes called masking genes?
• Why is genetic diversity important for long-term species survival?
• How are epigenetic changes related to evolution?
• What is the difference between gene expression and gene activity with regards to genetics?
• How do developmental genes affect the appearance of an organism throughout its life cycle?
• How have animal and plant breeders used genetic engineering to produce certain types of hybrids?
• What are the ethical implications of human cloning?
• What are the latest technologies in genetic engineering?
• What new technologies are needed to make human cloning a reality?
• How are living organisms adapting to the presence of plastics in our environment?
• Why are some individuals resistant to certain genetically programmed diseases?
• What are three common misconceptions about genetic engineering?
• What is transgenic technology, and how can it be used for disease prevention or treatment?
• How do microorganisms impact human health and the environment?
• What are some examples of a genetically modified organism?
• How does natural selection impact microorganisms?
• What is DNA profiling, and how can it help to solve crimes or return missing persons to their families?
• Why do scientists need more research surrounding epigenetics before drawing conclusions on its effects on evolution?

Biology Essay Topics About the Human Body

• What is the purpose of skeletal and respiratory systems?
• How do hormones affect our body on a daily basis?
• How does the endocrine system work as part of an overall regulatory system in the human body?
• What are some different types of cells found in the human body?
• What are the differences between exocrine and endocrine glands?
• What are stem cells, and why are they important to biological research?
• How do muscles work together to create movement in our bodies?
• How do bones help us to maintain balance while walking, standing up straight, and running?
• What are some ways that human behavior can impact our bodies?
• How do foods with high sugar content affect the digestive system?
• What organs are no longer necessary in the human body, and why?
• What blood types offer better protection from the elements?
• What are mosquitoes attracted to some humans and not to others?
• What pheromones do humans give off?
• What are the different types of blood cells?
• How does healthy eating help to maintain digestive health?
• Why do some people get migraines that others don’t seem to be bothered by?
• What is the pH level of human blood, and how can it be carefully regulated?
• How does altitude affect respiration in humans?
• What is the most complicated system in the human body?
• Explain the biological purposes of “Fight or Flight.”
• What role does the immune system play in human health?
• What is the difference between human anatomy and physiology?

Choosing any of these 160 biology essay topics will help students craft an informative and authoritative essay that is sure to earn them a passing grade.

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Biology KCSE Essay Questions and Answers Paper 2; Over 1,000

KCSE BIOLOGY PAPPER TWO 231/2 -ESSAYS FROM 1995 -2023

  a). Describe how insect pollinated flowers are adapted to pollination ( KCSE1995)

• Progesterone
• Luteinizinghormone
• Describe how excretion takes place in: ( KCSE1995)
• MammalianKidneys
• Greenplants
• a).Explainhowthemammalianskinisadaptedtoperformitsfunctions (20marks; KCSE 1996)

b). Describe how new plants arise by asexual reproduction (20 marks; KCSE 1996)

• a). What is parasitism? (KCSE1997)

b). Describe how the tapeworm is adapted to a parasitic mode of life (KCSE 1997)

• a). What is meant by the term digestion? (KCSE1997 )

b). Describe how the mammalian small intestine is adapted to its function (KCSE 1997)

• Discuss the various evidences, which show that evolution has taken place (20 marks; KCSE 1998)
• Explain how the mammalian intestines are adapted to perform their function (20 marks; KCSE 1998)
• a). Describethe:
• Process of inhalation in mammals ( KCSE 1999)
• Mechanisms of opening and closing of stomata in plants (KCSE1999)

b). Explain how the various activities of man have caused pollution of air (20 marks; KCSE 1999)

• a). Describe the role of hormones in the human menstrual cycle (20 marks; KCSE2000)

b). How are leaves of mesophytes suited to their functions (20 marks; KCSE 2000)

• a). State the functions of the following parts of the mammalian ear; (KCSE2001)
• Tympanicmembrane
• Eustachiantube
• Earossicles

b). Describe how semicircular canals perform their functions (KCSE 2001 )

• a). Describe the process of fertilization in a flowering plant ( KCSE2001)

b). State the change that take place in a flower after fertilization ( KCSE 2001)

• a). Describe the role of hormones in the growth and development of plants (20 marks; KCSE 2002)
• a). Name three types of skeletons found in multicellular animals ( KCSE2002)

b). Describe how the cervical, lumbar and sacral vertebrae are suited to their functions

Also read..

BIOLOGY FORM ONE SUMMARIZED NOTES

Biology Form one to four exams, notes and revision materials

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Biology notes form 1-4; Free KCSE downloads

Free Biology notes, revision questions, KCSE past Papers, Exams, Marking Schemes, Topical revision materials, Syllabus and Many more

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Biology Simplified Notes Form 1 to 4 Free

Biology Free notes and Exams for Form one to Four

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Biology KCSE Past Papers and all marking schemes free downloads

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(KCSE 2002)

• a). Describe the functions of the various parts of the human eye (20 marks; KCSE2003)

                                                                                                                                         1 | P a ge

(b). Describe how fruits and seeds are suited to their modes of dispersal (20 marks; KCSE 2003)

• a). How is the mammalian skin adapted to its functions? (20 marks; KCSE2004)

b). Explain how a biotic factors affect plants (20 marks; KCSE 2004)

• a). Describe how gaseous exchange takes place in terrestrial plants (20 marks; KCSE2005)

b). How is the human eye adapted to its function? (20 marks; KCSE 2005)

• a). Describe how human kidney functions (20 marks; KCSE2006)

b).Describehowwatermovesfromthesoiltotheleavesinatree (20marks; KCSE2006)

• a). Describe the structure and functions of the various parts of the human ear (20 marks; KCSE 2007 )

b). Describe causes and methods of controlling water pollution (20 marks; KCSE 2007 )

• Describe the nitrogen cycle (20 marks; KCSE2008)
• a). State four characteristics of gaseous exchangesurfaces

b). Describe the mechanism of gaseous exchange in a mammal (16 marks; KCSE 2008)

• a). How are flowers adapted to wind and insect pollination? (20 marks; KCSE2009 )

b). Describe the role of the liver in homeostasis in the human body (20 marks; KCSE2009)

• a). Describe the process of fertilization in flowering plants (20 marks; KCSE2010)

b). Describe how a finned fish such as tilapia moves in water (20 marks; KCSE 2010)

• a). Describe the exoskeleton and its function in insects (13 marks; KCSE2011)

b). Describe how accommodation in the human eye is brought about when focusing on a near object (7 marks; KCSE 2011)

• Using a relevant example in each case, describe simple and conditional reflex action (20 marks; KCSE2012)
• a).Usingarelevantexample,describehowanallergicreactionoccursinahumanbeing

(10 marks; KCSE 2012)

b).Describehowenvironmentalfactorsincreasetherateoftranspirationinterrestrialplants

• a). Describe the process of blood clotting in human beings (10 marks; KCSE2013 )

b).Howarerespiratorysurfacesinmammalsadaptedtotheirfunctions? (10marks; KCSE 2013)

• Describe the role of the following organs in excretion andhomeostasis
• The liver (10 marks; KCSE2013)
• The skin during hot environmental conditions (10 marks; KCSE2013 )
• a). Explain how each of the following factors affect the rate ofphotosynthesis:
• Temperature (2 marks; KCSE2014)
• Chlorophyll concentration (2 marks; KCSE2014 )

b). Describe the process of carbohydrate digestion in human beings (16 marks; KCSE2014)

• a). How does excretion take place in plants (4 marks; KCSE2014)

b). Describe the role of the human skin in homeostasis (16 marks; KCSE 2014)

• a).Explainthevariouswaysinwhichseedsandfruitsareadaptedtodispersal (20marks; KCSE 2015)

b). How is a mammalian heart structurally adapted to its function? (20 marks; KCSE2015)

                                                                                                                                         2 | P a ge

• (a).Usingarelevantexampleineachcase,describesimpleandconditionalreflexaction

(20 marks; KCSE 2016)

b). Describe how the mammalian heart is structurally adapted to its function (20 marks; KCSE 2016)

• a ) Explain the importance of protecting the forest ecosystem with reference to the following (20 marks; KCSE 2017 )
• a) Climate change
• b) Biodiversity

c)Biotechnology

d)Water conservation

• e) Pollution
• b) Describe how a mammalian eye is structurally adapted to its functions (20 marks)
• a) Describe the mode reproduction in a named fungus (5 marks)
• b) Describe the roles of hormones in the menstrual cycle (15 marks; KCSE 2018 )
• a) Giving examples, describe the following among organisms (20marks; KCSE 2019 )
• Predator-prey relationship
• b) Explain the effect of increased physical activity on the following organ system (20 marks)
• a)(i)Explain the role of the liver in blood regulation (3 marks ; KCSE 2020)
• Describe how a mammalian heart is adapted to its functions (17 marks)
• b) (i) Explain how the presence of chloroplast in guard cell affect the opening of the stomata (5marks)

(ii) Describe how various environmental factors affect the rate of photosynthesis (15marks)

• a) (i) Explain the role of placenta during pregnancy(10 marks) ( KCSE 2021)
• ii) Explain features and mechanisms that hinder self pollination and self fertilization(10 marks)

b)( i) Describe how xylem is structurally adapted to its functions  (5marks)

(ii) Describe the functions of mammalian blood in the human body(15 marks)

• a i) Describe how plants eliminate waste products(8 marks; KCSE2022 )

ii)Describe the structure and function of mammalian nephron (12marks)

• b) i. Describe five tropic responses and their survival values (15marks)

ii)Describe how mammalian heartbeat is controlled                (5mks)

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Biology Extended Essay Topics and RQs for IBDP

Table of contents

• Writing Metier

It’s time for our exploration of Biology extended essay topics, a resource designed to spark your curiosity and guide your research interests in the vast and vibrant field of biology. 

Whether you’re fascinated by the intricate workings of ecosystems or intrigued by the complexities of cellular processes, this article offers a diverse range of topics collected by expert academic writers to suit your interests. 

NB! If you need assistance with your Biology assignments, you can use our biology essay writing service , which will surely assist you. Now, let’s get back to the main question of the article – BIO EE topic ideas.

Bio EE topic categories

List of biology extended essay topic categories I’ll cover in this article.

• Impact of Urban Development on Local Ecosystems – Investigating the effects of urban expansion on biodiversity in a specific area.
• Marine Biology and Ocean Acidification – Studying the impact of changing pH levels on marine life.
• Invasive Species and Their Impact on Biodiversity – Analyzing how a particular invasive species has affected native wildlife.
• Conservation Efforts for Endangered Species – Evaluating the effectiveness of current conservation strategies for a specific endangered species.
• Climate Change and Its Effects on Ecosystems – Researching how a particular ecosystem has been impacted by climate change.
• Nutrition and Diet’s Impact on Human Health – Exploring the effects of a specific diet on human health.
• Exercise Physiology – Investigating how different types of exercise affect a particular aspect of human health.
• Neurobiology of Sleep – Studying the effects of sleep patterns on cognitive functions.
• Genetic Factors in Diseases – Exploring the role of genetics in the susceptibility to a specific disease.
• Impact of Environmental Factors on Allergies – Analyzing how environmental changes have influenced the prevalence of allergies.
• Gene Expression in Cancer Cells – Investigating how gene expression differs in cancerous versus normal cells.
• Protein Synthesis and Its Regulation – Studying the regulation of protein synthesis in a specific organism or cell type.
• Stem Cell Research and Regenerative Medicine – Exploring the potential of stem cells in treating a specific condition.
• Viral Replication and Host Interaction – Examining how a particular virus replicates and interacts with its host.
• DNA Repair Mechanisms – Investigating the efficacy of different DNA repair mechanisms under various conditions.
• Photosynthesis Variations Among Plant Species – Comparing photosynthetic efficiency in different plant species.
• Impact of Climate Change on Plant Growth – Studying how changing climates affect the growth of a specific plant species.
• Medicinal Properties of Plants – Investigating the medicinal properties of a specific plant.
• Plant Defense Mechanisms Against Pathogens – Exploring how a particular plant species defends itself against pathogens.
• Genetic Modification and Crop Improvement – Analyzing the impacts of genetic modification on a specific crop’s traits.
• Social Behavior in Insects – Studying the social structures and behaviors of a specific insect species.
• Bird Migration Patterns – Investigating the factors influencing migration patterns of a specific bird species.
• Physiological Adaptations in Marine Mammals – Exploring adaptations that enable marine mammals to survive in their environments.
• Impact of Environmental Stressors on Animal Behavior – Analyzing how specific stressors affect the behavior of a particular animal species.
• Endocrine Regulation in Animals – Studying how the endocrine system regulates processes in a specific animal.
• Antibiotic Resistance in Bacteria – Investigating the mechanisms of antibiotic resistance in a specific bacterial strain.
• Use of Microorganisms in Bioremediation – Exploring the use of microorganisms in cleaning up environmental pollutants.
• Genetic Engineering and Its Applications – Analyzing the applications and implications of genetic engineering in a specific field.
• Role of Microbiome in Human Health – Studying how the human microbiome influences health and disease.
• Yeast Fermentation and Its Industrial Applications – Investigating the fermentation process in yeast and its uses in industry.
• Evolutionary Adaptations to Environmental Changes – Exploring how a particular species has adapted to environmental changes over time.
• Genetic Diversity and Population Health – Studying the impact of genetic diversity on the health of a specific population.
• Molecular Basis of Inheritance – Investigating the molecular mechanisms of inheritance in a specific organism.
• Speciation and Genetic Drift – Analyzing the role of genetic drift in the speciation process.
• Human Evolutionary Biology – Studying aspects of human evolution, such as the development of specific traits.

Every category and its subcategories provide a comprehensive overview, from the microscopic wonders of microbiology to the grand scale of evolutionary biology. 

With the help of our IB writers team, I have managed to collect all these ideas for you, so I hope you will be enjoying this. I aim to inspire your investigative spirit and help you select a topic that  satisfies the IB criteria  and aligns with your passion for biology. 

IB Bio extended essay topics

So, let’s begin with a list of IB Biology EE topics list.

Ecology and Environmental Science

I’m stoked to talk about Ecology and Environmental Science . It’s all about how living things interact with each other and their surroundings. Think of it like a complex dance of life, where every move affects the whole scene. 

From the hustle and bustle of city ecosystems to the quiet, yet dynamic, world of marine biology, we’ll explore how these interactions shape our planet. We’ll also explore the hot topics of invasive species and their impacts, the heroic efforts in conservation, and the big elephant in the room – climate change. 

So, let’s get ready to explore the intricate tapestry of life that makes our world fascinating!

Impact of Urban Development on Local Ecosystems

• Research Question: How does the presence of urban green spaces affect bird species diversity in [City Name]?
• Research Question: What impact do urban heat islands have on the behavior and distribution of [Specific Animal Species] in [City Name]?

Marine Biology and Ocean Acidification

• Research Question: How does ocean acidification affect coral bleaching events in the [Specific Coral Reef Location]?
• Research Question: What is the impact of increasing ocean acidification on the shell growth and survival of [Specific Shellfish Species]?

Invasive Species and Their Impact on Biodiversity

• Research Question: What has been the impact of the invasive Zebra Mussel on native species in the Great Lakes?
• Research Question: How do invasive plant species [Specify Species] affect the growth and survival of native plants in [Specific Region]?

Conservation Efforts for Endangered Species

• Research Question: How effective have conservation strategies been in increasing the population of the Giant Panda in China?
• Research Question: What are the impacts of anti-poaching measures on the survival of Rhinoceros populations in Africa?

Climate Change and Its Effects on Ecosystems

• Research Question: How is the melting of Arctic sea ice affecting the habitat and migration patterns of polar bears?
• Research Question: What are the effects of rising global temperatures on plant and animal life in the Alpine ecosystems?

Transitioning from the external world of Ecology and Environmental Science, we now turn to the internal intricacies of Human Physiology and Health. 

This shift brings us from exploring external ecosystems to understanding our body’s inner workings, a world where lifestyle choices meet biological responses.

Human Physiology and Health

Let’s chat about Human Physiology and Health, the amazing science of how our bodies work and how we keep them ticking. We’re diving headfirst into the world of nutrition and diet – what you eat isn’t just about taste, it’s about your health too! 

Then, we’ll check out how exercise, that thing we all know we should do more of, affects our bodies in awesome ways. Ever wondered about the science of sleep and how it messes with your brain when you don’t catch enough Z’s? We’ll cover that, along with the mysteries of genetics in diseases, and how our environment plays a sneaky role in triggering allergies. 

It’s going to be an eye-opening ride through the wonders of our bodies!

Nutrition and Diet’s Impact on Human Health

• Research Question: How does adherence to the Mediterranean diet affect cardiovascular health indicators in adults?
• Research Question: What is the impact of a long-term vegan diet on nutrient absorption and health in teenagers?

Exercise Physiology

• Research Question: How does HIIT affect cardiovascular fitness in young adults?
• Research Question: What are the effects of regular yoga practice on stress and anxiety levels in college students?

Neurobiology of Sleep

• Research Question: How does sleep deprivation impact cognitive performance and memory in high school students?
• Research Question: What is the relationship between sleep patterns and academic performance in IB students?

Genetic Factors in Diseases

• Research Question: How do specific genetic factors contribute to the risk of developing Alzheimer’s disease?
• Research Question: What is the contribution of genetics to the onset of Type 2 Diabetes in populations with high prevalence rates?

Impact of Environmental Factors on Allergies

• Research Question: What is the correlation between air pollution levels and the prevalence of respiratory allergies in urban children?
• Research Question: How has climate change influenced the prevalence and severity of allergic diseases in [Specific Region]?

Moving from Human Physiology and Health, we zoom into the realm of Cellular and Molecular Biology. 

Here, we swap the broader human health perspective for a closer look at life’s building blocks, delving into the microscopic universe that operates within every living being.

Cellular and Molecular Biology

Ready to geek out on Cellular and Molecular Biology? This is where we get down to the nitty-gritty of life – the cells and molecules that make up every living thing. 

We’re talking about the big bad world of cancer cells and what makes them tick, the fascinating process of how our cells make proteins, and the cutting-edge stuff like stem cell research and how viruses play a game of cat and mouse with our bodies. 

Meanwhile, make sure also to check our article with biology research paper topics for all students.

Plus, we’ll unravel the mysteries of how our cells fix their own DNA. It’s like being a detective, but for biology. Trust me, it’s cooler than it sounds!

Gene Expression in Cancer Cells

• Research Question: How does gene expression in breast cancer cells differ from that in normal breast tissue?
• Research Question: What role do specific oncogenes play in the development of colorectal cancer?

Protein Synthesis and Its Regulation

• Research Question: How is protein synthesis regulated in response to physical exercise in human muscle cells?
• Research Question: How do bacterial cells regulate protein synthesis under environmental stress conditions?

Stem Cell Research and Regenerative Medicine

• Research Question: What is the potential of stem cell therapy in the treatment of Parkinson’s Disease?
• Research Question: How can stem cells be used to repair damaged heart tissue?

Viral Replication and Host Interaction

• Research Question: How does HIV replicate within human cells, and what is its impact on the immune system?
• Research Question: How does the Influenza virus adapt to host immune responses over time?

DNA Repair Mechanisms

• Research Question: How do DNA repair mechanisms change as human cells age?
• Research Question: How effective are DNA repair mechanisms in skin cells exposed to different levels of UV radiation?

After diving into the microcosm of cells and molecules, we transition to Plant Biology. 

This shift steers us from the foundations of life at the cellular level to the diverse world of plants, exploring how these organisms harness and embody basic biological principles.

Plant Biology

Let’s dive into the world of Plant Biology! Plants are not just pretty to look at; they’re the backbone of all life on Earth. 

We’ll be talking about how they turn sunlight into food – a process that’s as important as it is fascinating. Ever wonder how plants are coping with our changing climate or what superpowers medicinal plants have? We’ve got that covered. 

We’ll also explore the secret life of plants, how they defend themselves against enemies, and the science behind making them stronger and better through genetic modification. 

It’s time to get our hands dirty and uncover the secrets of the plant world!

Photosynthesis Variations Among Plant Species

• Research Question: How does photosynthetic efficiency compare between C3 and C4 plants under varying light conditions?
• Research Question: What is the effect of varying light intensities on the rate of photosynthesis in [Specific Aquatic Plant Species]?

Impact of Climate Change on Plant Growth

• Research Question: How are Arctic tundra plants adapting their growth patterns in response to global warming?
• Research Question: What is the impact of elevated atmospheric CO2 levels on the growth of [Specific Plant Species]?

Medicinal Properties of Plants

• Research Question: What are the anti-inflammatory properties of [Specific Medicinal Plant] and how can they be harnessed?
• Research Question: What is the antioxidant capacity of different herbal teas, and how does it affect human health?

Plant Defense Mechanisms Against Pathogens

• Research Question: How do [Specific Plant Species] defend themselves against fungal infections?
• Research Question: What role do secondary metabolites play in the defense mechanisms of [Specific Plant Species] against herbivores?

Genetic Modification and Crop Improvement

• Research Question: How effective are genetically modified crops in resisting drought conditions compared to traditional varieties?
• Research Question: What is the impact of genetic modification on the nutrient content of [Specific Crop]?

From the stationary life of plants, we now step into the dynamic world of Animal Behavior and Physiology. This change of scene introduces us to the complex behaviors and physiological adaptations of animals, offering a contrasting perspective to plant biology.

Animal Behavior and Physiology

Let’s jump into the wild and wonderful world of Animal Behavior and Physiology. This is where we get to spy on the animal kingdom and learn about their secret lives. 

From the social gossip of insects to the globe-trotting adventures of migratory birds, animals have some amazing stories to tell. 

We’ll also look at how marine animals have adapted to their deep and mysterious homes, how animals respond when their environment goes bonkers, and the hormonal soap operas that dictate their lives. 

It’s like being a fly on the wall in the most interesting nature documentary ever!

Social Behavior in Insects

• Research Question: How does the social structure of honeybee colonies affect their survival and productivity?
• Research Question: What are the primary communication mechanisms used in ant colonies, and how do they impact colony efficiency?

Bird Migration Patterns

• Research Question: How has climate change affected the migration routes of [Specific Bird Species]?
• Research Question: How do magnetic fields influence the migration patterns of [Specific Bird Species]?

Physiological Adaptations in Marine Mammals

• Research Question: What physiological adaptations allow sperm whales to dive to extreme depths?
• Research Question: How do polar bears regulate their body temperature in the Arctic environment?

Impact of Environmental Stressors on Animal Behavior

• Research Question: How does underwater noise pollution affect the behavior and communication of dolphins?
• Research Question: What are the effects of urban light pollution on the nocturnal activities of [Specific Nocturnal Animal Species]?

Endocrine Regulation in Animals

• Research Question: How do hormones regulate the reproductive behaviors in [Specific Bird Species]?
• Research Question: How do stress-induced cortisol levels affect the behavior of [Specific Wild Animal Species] in their natural habitat?

Leaving the observable world of animals, we enter the less visible but equally important sphere of Microbiology and Biotechnology. This transition takes us from larger life forms to the microscopic, where tiny organisms significantly impact our health, environment, and technology.

Microbiology and Biotechnology

Alright, microbe hunters and tech wizards, it’s time to zoom in on Microbiology and Biotechnology. This is the world of the tiny, where bacteria and viruses hang out, and where science meets innovation . 

We’re going to explore the battleground of antibiotic resistance, how we can use tiny organisms to clean up our messes, and the mind-blowing possibilities of genetic engineering. 

Ever thought about how your gut buddies – the microbiome – affect your health? We’ll get into that too, along with the yeast party that’s behind some of your favorite bread and beverages.

Antibiotic Resistance in Bacteria

• Research Question: What factors have contributed to the rise of Methicillin-resistant Staphylococcus aureus (MRSA) in hospitals?
• Research Question: What are the primary mechanisms of antibiotic resistance in Escherichia coli strains found in [Specific Environment]?

Use of Microorganisms in Bioremediation

• Research Question: How effective are specific bacterial species in the bioremediation of oil spills?
• Research Question: What is the effectiveness of using fungi in the phytoremediation of soils contaminated with heavy metals?

Genetic Engineering and Its Applications

• Research Question: What is the potential of CRISPR-Cas9 technology in preventing genetic diseases?
• Research Question: How has genetic engineering been used to enhance the nutritional quality of [Specific Crop]?

Role of Microbiome in Human Health

• Research Question: What is the relationship between the gut microbiome and obesity in adults?
• Research Question: How does the diversity of the human microbiome affect immune system functioning?

Yeast Fermentation and Its Industrial Applications

• Research Question: How efficient is yeast fermentation in the production of biofuels compared to traditional methods?
• Research Question: How do different yeast strains affect the flavor profiles in beer brewing?

Finally, we shift from the practical applications in Microbiology and Biotechnology to the historical narrative of Evolution and Genetics. This move links present-day biological understanding to the historical journey of life, unraveling how genetic heritage and evolutionary processes shape all living things.

Evolution and Genetics

Ready to unravel the tales of Evolution and Genetics? This is where we figure out how life on Earth got to be as diverse and fantastic as it is. We’ll be exploring the incredible adaptations organisms have made to survive and thrive, how genetic diversity is crucial for the health of species, and the molecular secrets behind inheritance. 

Ever pondered how new species come into being or what genetics reveal about our own ancient history ? Well, you’re in for a treat. We’re about to walk through time and genes to discover the roots and branches of the tree of life. Buckle up!

Evolutionary Adaptations to Environmental Changes

• Research Question: What evolutionary adaptations have enabled cacti to thrive in harsh desert environments?
• Research Question: How have Galápagos finches undergone adaptive radiation in response to their environment?

Genetic Diversity and Population Health

• Research Question: How does genetic diversity affect the health and survival of animal populations on isolated islands?
• Research Question: How can conservation genetics be used to enhance the survival prospects of [Specific Endangered Species]?

Molecular Basis of Inheritance

• Research Question: What is the molecular basis of inheritance for Sickle Cell Anemia?
• Research Question: How can mitochondrial DNA be used to trace maternal lineage in human populations?

Speciation and Genetic Drift

• Research Question: What role has genetic drift played in the speciation of cichlids in Lake Victoria?
• Research Question: How does genetic drift affect the genetic diversity of small, isolated animal populations?

Human Evolutionary Biology

• Research Question: What evolutionary factors contributed to the development of bipedalism in early humans?
• Research Question: What are the key genetic adaptations that enable humans to live at high altitudes?

These topics and questions aim to inspire in-depth exploration and research, allowing students to delve into various aspects of biology, from molecular to ecosystem levels. 

Use them as an inspiration for your future Ib extended essay.

Select your topic wisely!

The world of biology is rich with diverse topics suitable for an Extended Essay. From the tiny intricacies of cellular biology to the broad complexities of environmental science, each area offers a unique perspective and a chance for in-depth exploration . 

The key to a successful essay is choosing a topic that not only interests you but also challenges your analytical and research skills.

Need Extra Support?

If you’re seeking guidance with your topic selection, or if you need assistance in writing or editing your Biology Extended Essay , our team at Writing Metier is here to help. 

Our experienced IB writers are equipped to provide the support you need to refine your ideas and enhance your writing. Contact us for personalized assistance, or simply fill out our online order form with details of your IB EE and ensure your essay is a reflection of your best efforts.

Free topic suggestions

Vasy kafidoff.

Vasyl Kafidoff is a co-founder and CEO at WritingMetier. He is interested in education and how modern technology makes it more accessible. He wants to bring awareness about new learning possibilities as an educational specialist. When Vasy is not working, he’s found behind a drum kit.

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Literary Magazine Retracts Israeli Writer’s Essay as Staffers Quit

An Israeli writer’s essay about seeking common ground with Palestinians led to the resignation of at least 10 staff members at Guernica.

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By Marc Tracy

Guernica, a small but prestigious online literary magazine, was thrown into turmoil in recent days after publishing — and then retracting — a personal essay about coexistence and war in the Middle East by an Israeli writer, leading to multiple resignations by its volunteer staff members, who said that they objected to its publication.

In an essay titled “From the Edges of a Broken World,” Joanna Chen, a translator of Hebrew and Arabic poetry and prose, had written about her experiences trying to bridge the divide with Palestinians, including by volunteering to drive Palestinian children from the West Bank to receive care at Israeli hospitals, and how her efforts to find common ground faltered after Hamas’s Oct. 7 attack and Israel’s subsequent attacks on Gaza.

It was replaced on Guernica’s webpage with a note, attributed to “admin,” stating: “Guernica regrets having published this piece, and has retracted it,” and promising further explanation. Since the essay was published, at least 10 members of the magazine’s all-volunteer staff have resigned, including its former co-publisher, Madhuri Sastry, who on social media wrote that the essay “attempts to soften the violence of colonialism and genocide” and called for a cultural boycott of Israeli institutions.

Chen said in an email that she believed her critics had misunderstood “the meaning of my essay, which is about holding on to empathy when there is no human decency in sight.”

“It is about the willingness to listen,” she said, “and the idea that remaining deaf to voices other than your own won’t bring the solution.”

Michael Archer, the founder of Guernica, said that the magazine would publish a response in the coming days. “The time we are taking to draft this statement reflects both our understanding of the seriousness of the concerns raised and our commitment to engaging with them meaningfully,” he wrote in a text.

The essay was published on March 4 and taken down a few days later, according to the Wayback Machine, where the first-person essay is still available in archived form.

Chen, who was born in England and moved to Israel with her family when she was 16, writes in the essay about trying to reconnect with a Palestinian friend and former colleague after the Oct. 7 attacks, and of not knowing how to respond when her friend texted back reports of Israeli attacks on a hospital complex in Gaza.

“Beyond terrible, I finally wrote, knowing our conversation was over,” Chen’s essay said. “I felt inexplicably ashamed, as if she were pointing a finger at me. I also felt stupid — this was war, and whether I liked it or not, Nuha and I were standing at opposite ends of the very bridge I hoped to cross. I had been naïve; this conflict was bigger than the both of us.”

Chen said in the email that she had worked on the essay — her second for Guernica — with the magazine’s editor in chief and publisher, Jina Moore Ngarambe. Over emails and in a one-hour phone conversation, Chen said, “I was offered the distinct impression my essay was appreciated. I was given no indication that the editorial staff was not onboard.”

She still has not heard from anyone at Guernica, she said Tuesday.

Ngarambe, who in 2017 and 2018 worked at The New York Times as its East Africa bureau chief, did not reply to requests for comment on Monday and Tuesday.

In the days following the essay’s online publication last week, several Guernica staffers announced their resignations on X, calling the essay a betrayal of the editorial principles of the magazine, a nonprofit that was founded in 2004.

April Zhu, who resigned as a senior editor, wrote that she believed the article “fails or refuses to trace the shape of power — in this case, a violent, imperialist, colonial power — that makes the systematic and historic dehumanization of Palestinians (the tacit precondition for why she may feel a need at all to affirm ‘shared humanity’) a non-issue.”

Summer Lopez, the chief of free expression programs at PEN America, the writers’ group, said that “a writer’s published work should not be yanked from circulation because it sparks public outcry or sharp disagreement.”

“The pressures on U.S. cultural institutions in this moment are immense,” Lopez said in a statement. “Those with a mission to foster discourse should do so by safeguarding the freedom to write, read, imagine and tell stories.”

In a mission statement on its website, Guernica states that it is “a home for incisive ideas and necessary questions.”

Marc Tracy is a Times reporter covering arts and culture. He is based in New York. More about Marc Tracy

Our Coverage of the Israel-Hamas War

News and Analysis

The White House said that Israel had agreed to try to reschedule a canceled visit to Washington  to discuss alternatives to a ground offensive in Rafah, the southern Gaza city.

A new Gallup poll showed that a majority of Americans disapprove of Israel’s action in Gaza.

The latest exchange of fire  between Israel and Hezbollah across the Lebanon border has raised fears that the war in Gaza between Israel and Hamas — a Hezbollah ally — could spiral into a wider conflict .

Israel has deployed an expansive facial recognition program in Gaza . The experimental effort, which has not been disclosed, is being used to conduct mass surveillance in the territory.

Palestinian Detainees: Israel has imprisoned more than 9,000 Palestinians suspected of militant activity . Rights groups say that some have been abused or held without charges.

A Hostage’s Account: Amit Soussana, an Israeli lawyer, is the first former hostage to speak publicly about being sexually assaulted  during captivity in Gaza.

A Power Vacuum: Since the start of the war, Prime Minister Benjamin Netanyahu of Israel has done little to address the power vacuum that would appear after Israeli forces leave Gaza. The risks of inaction are already apparent in Gaza City .

Chuck Schumer’s Speech:  Speaking to the U.S. Senate, the majority leader and highest-ranking Jewish official in the United States branded Netanyahu a major impediment to peace. In an interview, he explained why he felt obligated  to call for new leadership in Israel.