photosynthesis and respiration biology worksheet

NGSS Life Science

Photosynthesis worksheets.

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Photosynthesis Concepts

• Light Dependent Reactions - photosystem 2, photosystem 1, electron transport chain, NADP+.
• Light Independent Reactions - Calvin cycle , NADPH.
• Chloroplasts - thylakoid, granum, stroma, mesophyll, guard cells.
• Pigments - chlorophyll a, chlorophyll b.
• Electron Acceptors - O 2 , NADPH.
• Photorespiration - oxidative photosynthetic carbon cycle, C 2 photosynthesis.
• C 4 Pathway - C 4 carbon fixation.
• CAM Plants - crassulacean acid metabolism.

Lessons Organized by NGSS Standard

• LS1 From Molecules to Organisms
• LS2 Ecosystems
• LS3 Heredity
• LS4 Biological Evolution

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AP®︎/College Biology

Course: ap®︎/college biology   >   unit 3.

• Photosynthesis

Intro to photosynthesis

• Breaking down photosynthesis stages
• Conceptual overview of light dependent reactions
• The light-dependent reactions
• The Calvin cycle
• Photosynthesis evolution
• Photosynthesis review

Introduction

What is photosynthesis.

• Energy. The glucose molecules serve as fuel for cells: their chemical energy can be harvested through processes like cellular respiration and fermentation , which generate adenosine triphosphate— ATP ‍   , a small, energy-carrying molecule—for the cell’s immediate energy needs.
• Fixed carbon. Carbon from carbon dioxide—inorganic carbon—can be incorporated into organic molecules; this process is called carbon fixation , and the carbon in organic molecules is also known as fixed carbon . The carbon that's fixed and incorporated into sugars during photosynthesis can be used to build other types of organic molecules needed by cells.

The ecological importance of photosynthesis

• Photoautotrophs use light energy to convert carbon dioxide into organic compounds. This process is called photosynthesis.
• Chemoautotrophs extract energy from inorganic compounds by oxidizing them and use this chemical energy, rather than light energy, to convert carbon dioxide into organic compounds. This process is called chemosynthesis.
• Photoheterotrophs obtain energy from sunlight but must get fixed carbon in the form of organic compounds made by other organisms. Some types of prokaryotes are photoheterotrophs.
• Chemoheterotrophs obtain energy by oxidizing organic or inorganic compounds and, like all heterotrophs, get their fixed carbon from organic compounds made by other organisms. Animals, fungi, and many prokaryotes and protists are chemoheterotrophs.

Leaves are sites of photosynthesis

The light-dependent reactions and the calvin cycle.

• The light-dependent reactions take place in the thylakoid membrane and require a continuous supply of light energy. Chlorophylls absorb this light energy, which is converted into chemical energy through the formation of two compounds, ATP ‍   —an energy storage molecule—and NADPH ‍   —a reduced (electron-bearing) electron carrier. In this process, water molecules are also converted to oxygen gas—the oxygen we breathe!
• The Calvin cycle , also called the light-independent reactions , takes place in the stroma and does not directly require light. Instead, the Calvin cycle uses ATP ‍   and NADPH ‍   from the light-dependent reactions to fix carbon dioxide and produce three-carbon sugars—glyceraldehyde-3-phosphate, or G3P, molecules—which join up to form glucose.

Photosynthesis vs. cellular respiration

Attribution.

• “ Overview of Photosynthesis ” by OpenStax College, Biology, CC BY 3.0 . Download the original article for free at http://cnx.org/contents/5bb72d25-e488-4760-8da8-51bc5b86c29d@8 .
• “ Overview of Photosynthesis ” by OpenStax College, Concepts of Biology, CC BY 3.0 . Download the original article for free at http://cnx.org/contents/[email protected] .

Works cited:

• "Great Oxygenation Event." Wikipedia. Last modified July 17, 2016. https://en.wikipedia.org/wiki/Great_Oxygenation_Event .

Additional references

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Photosynthesis and Respiration

Photosynthesis and respiration are two vital processes that occur in living organisms . Photosynthesis is the process by which green plants, algae , and some bacteria convert light energy , carbon dioxide , and water into glucose and oxygen . Respiration , on the other hand, is the process by which cells break down glucose and other organic compounds to release energy that is used for cellular activities.

Photosynthesis

• Definition: Photosynthesis is the process by which green plants, algae , and some bacteria convert light energy , carbon dioxide , and water into glucose and oxygen .
• Equation: 6CO 2 + 6H 2 O + Light energy → C 6 H 12 O 6 + 6O 2
• Key Factors: Light , chlorophyll, carbon dioxide , and water are essential for photosynthesis to occur.
• Organisms : Photosynthesis occurs in green plants, algae , and some bacteria .

Respiration

• Definition: Respiration is the process by which cells break down glucose and other organic compounds to release energy that is used for cellular activities.
• Equation: C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O + Energy
• Key Factors: Oxygen and glucose are essential for respiration to occur.
• Organisms : Respiration occurs in all living organisms , including plants, animals, and microorganisms .

Study Guide

Here are some key points to remember when studying photosynthesis and respiration :

• Understand the chemical equations for photosynthesis and respiration and the products formed in each process.
• Learn about the organelles involved in these processes, such as chloroplasts in photosynthesis and mitochondria in respiration .
• Explore the factors that affect the rate of photosynthesis , such as light intensity, carbon dioxide concentration, and temperature .
• Understand the different types of respiration , including aerobic respiration (with oxygen ) and anaerobic respiration (without oxygen ).
• Explore the interconnected nature of photosynthesis and respiration in the carbon cycle and energy flow within ecosystems .

By understanding the intricacies of photosynthesis and respiration , you will gain valuable insights into the fundamental processes that sustain life on Earth .

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Photosynthesis Worksheets

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What is Photosynthesis?

Photosynthesis is the process by which green plants, algae, and some bacteria convert carbon dioxide and water into glucose (one of the types of sugars), and oxygen using the energy from sunlight. This process is essential for the growth and survival of these organisms and plays a crucial role in Earth's ecosystem and the production of oxygen in the atmosphere.

Here's a simplified overview of the steps involved in photosynthesis:

• Light Absorption: Chlorophyll and other pigments in the chloroplasts of plant cells absorb sunlight.
• Light Reaction: In the presence of sunlight, water molecules are split into oxygen and hydrogen ions. The energy from the sun is captured and used to convert ADP (adenosine diphosphate) and inorganic phosphate (Pi) into ATP (adenosine triphosphate), a molecule that stores energy, and NADPH (nicotinamide adenine dinucleotide phosphate), which is an electron carrier.
• Carbon Fixation (Calvin Cycle): Carbon dioxide from the atmosphere is captured and combined with the stored energy in the form of ATP and NADPH to produce glucose and other organic compounds. This process takes place in a series of enzyme-driven reactions known as the Calvin cycle.

Photosynthesis not only provides energy and helps plants grow, but it also releases oxygen into the atmosphere, which is vital for animals, humans, and other organisms. It is one of the foundational processes in the Earth's ecosystems and is responsible for the production of the majority of the organic matter upon which most life forms depend.

What is a Photosynthesis Worksheet?

Interactive photosynthesis worksheets are an educational resource that delves into the fascinating process by which plants harness sunlight to create energy. Designed to enhance students' understanding of the intricate relationship between science, chemistry, and the natural world, these photosynthesis practice worksheets offer a hands-on approach to exploring photosynthesis. Through engaging activities and informative content, students learn how plants absorb sunlight and transform it into the energy they need for growth and survival. These worksheets encourage critical thinking and provide a deeper insight into the role of plants in our atmosphere and the larger ecosystem.

How to Use Photosynthesis Worksheets to Make Learning Fun

Get ready to embark on an exciting journey of plant science with our dynamic photosynthesis worksheets! These resources aren't just sheets of paper; they're your secret tools to unlock the concept of photosynthesis. Let's dive in and see how you can use these worksheets to infuse your lessons with interactive learning and endless fun:

• Transport learners into the heart of plant biology! Our photosynthesis worksheet biology allows students to delve into the aspects of leaves and their remarkable ability to create food using light, carbon dioxide, and water. It's like revealing the hidden world of nature's factories with a photosynthesis worksheet for middle school!
• Illuminate the captivating process of turning sunlight into energy. Through step-by-step breakdowns, students grasp how light fuels the synthesis of crucial molecules, like oxygen and carbohydrates, in plant cells.
• Ever wondered where the oxygen in our air comes from? Our photosynthesis diagram worksheet spilled the beans! Kids uncover the astonishing fact that plants release oxygen as a byproduct of photosynthesis, enriching the very air we breathe. A photosynthesis and cellular respiration review worksheet is just what you need!
• Introduce the role of carbon dioxide in the photosynthesis tale. Through interactive activities, students witness how plants skillfully capture carbon dioxide from the atmosphere to craft their nourishing food.
• Embark on an adventure through light-independent reactions using a photosynthesis activity worksheet. Students explore how plants utilize stored energy to create carbohydrates, nurturing their growth and development.

With our comprehensive photosynthesis and respiration worksheet, you're not just teaching science – you're igniting scientific curiosity. Watch as students become avid explorers of the plant world, armed with newfound knowledge about energy production, food creation, and the incredible dance of nature's elements.

Why Use Photosynthesis and Cellular Respiration Worksheets?

Elevate your classroom experience with the remarkable world of photosynthesis and cellular respiration worksheets! These resources are your gateway to unraveling the captivating processes that power plant life. Here's why they're a must-have for your teaching toolkit:

• Our photosynthesis making energy worksheet lets students peer into the amazing realm of leaves, sunlight, and plant energy. They'll discover how leaves work their magic, transforming sunlight into sustenance for growth.
• Break down the complexity of turning sunlight into energy. These worksheets simplify the process, helping students grasp how light fuels the creation of vital molecules in plant cells.
• Dive into the connection between plants and carbon. Through interactive activities with a photosynthesis worksheet for high school, students see how plants gather carbon dioxide to construct their energy-packed compounds.
• Access ready-to-use and free resources that make teaching complex topics effortless. These printable worksheets act as trusty allies in your science classroom.

Enhance your students' learning journey by seamlessly integrating our cellular respiration and photosynthesis worksheet with a diverse array of educational resources. From engaging science activities to understanding the intricate water cycle and exploring models of chemical reactions , your classroom can flourish with dynamic lessons. Additionally, dive into captivating science infographic projects that allow students to visually present their newfound knowledge. By intertwining these resources, you'll create an immersive learning experience that sparks curiosity and nurtures a deeper understanding of science concepts.

How to Make a Photosynthesis Worksheet

Choose one of the premade templates.

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Happy Creating!

Frequently Asked Questions about Photosynthesis Worksheets

What is a photosynthesis diagram worksheet.

A photosynthesis diagram worksheet is an educational resource designed to illustrate and explain the intricate process of photosynthesis. Printable photosynthesis worksheets typically include labeled diagrams, explanatory text, and questions to complete.

How can photosynthesis and cellular respiration worksheets benefit my students?

Photosynthesis and cellular respiration worksheets provide a comprehensive understanding of two fundamental processes in plant life. By engaging with these worksheets, students gain insight into how plants produce energy and interact with their environment. This knowledge fosters critical thinking, scientific curiosity, and a deeper appreciation for the natural world.

Are these worksheets suitable for different grade levels?

Yes, our photosynthesis and cellular respiration worksheets cater to various grade levels. We offer materials suitable for elementary, middle, and high school students.

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The Biology Corner

Biology Teaching Resources

Tag: photosynthesis

Observe Photosynthesis with this Easy Experiment

Use phenol red to observe plant photosynthesis. As plants consume carbon, the indicator will change from yellow to red. Materials are easy!

Light Independent Reaction and Calvin Cycle

Students label a graphic showing an overview of photosynthesis and the Calvin cycle, plus a detailed image of photosystem I and II.

Investigation: Viewing Stomata in Zebrina Plants

View the stomata of plants with this simple activity that uses tape and fingernail polish. Great for beginning biology students!

Investigation: Algae Beads and Photosynthesis

Students use algae beads to observe photosynthesis and respiration. Algae beads are placed in an indicator solutions to measure CO2.

Photosynthesis Virtual Lab

This lab was created to replace the popular waterweed simulator which no longer functions because it is flash-based. In this virtual photosynthesis lab, students can manipulate the light intensity, light color, and distance from the light source. A plant is shown in a beaker and test tube which bubbles to indicate the rate of photosynthesis.…

Photosynthesis Label

I designed for remote learning during the 2020 pandemic, though it is based off a similar photosynthesis worksheet that students would complete in class. Remote learning makes it more challenging for students to do labeling exercises since it can be difficult to annotate text without other apps installed. I made this labeling on Google slides…

Photosynthesis Coloring

Students read short text passages and then color images to help them relate the textual information with the graphic.

Photosystems and Chemiosmosis Coloring

Use this coloring worksheet to explore how plant cells harvest energy form the sun to generate ATP in the process known as chemiosmosis.   

Analyzing Graphics: The Carbon Cycle

This graphic illustrates how atmospheric carbon dioxide is produced during cellular respiration and combustion and then taken up by plants.   Students apply what they have learned about the processes of photosynthesis and respiration to label parts of the graphic an answer questions.  This activity is probably best done as a pair-share activity or a…

How Mitochondria Produce Energy for the Cell

This worksheet is intended for basic biology students to learn how cellular respiration provides energy for the cell.  Students color a mitochondrion which shows how the inner membrane is folded into cristae and indicates that mitochondria are organelles that have their own DNA.   Finally, students examine the equation for respiration and compare it to…

Photosynthesis Lab – How Light Color Affects Growth

A virtual simulator that shows how plant growth changes in response to the color of light. Students measure the heights of plants grown under different colors.

How Does Photosynthesis Work?

This handout can be used with a lecture on photosynthesis, where students label the main features of the light-dependent reaction and the Calvin cycle.

Investigation: Photosynthesis and Leaf Discs

As photosynthesis takes place, oxygen is released and causes the leaf to float. The number of floating disk is a measure of the rate of photosynthesis.

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Photosynthesis - GCSE Biology Worksheets

Subject: Biology

Age range: 14-16

Resource type: Worksheet/Activity

Last updated

14 January 2023

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This resource contains worksheets that can be used in class or as homework to enable your students to practice what they have learnt in the classroom. The diagrams are simple to aid students to visually see what may come up in their upcoming GCSE exams.

These resources could used to check prior learning for your students so you can plan accordingly for future lessons. I hope your students find these useful either in the classroom or as revision.

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• Photosynthesis
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• Uses of Glucose

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Cell Biology Cell Structure and Specialised Cell Microscopy Microscopy Required Practical Culturing Microorganisms – Triple Microbiology Required Practical – Triple Cell Division and Stem Cells Diffusion, Osmosis and Active Transport Osmosis Required Practical

Organisation Organisation and The Digestive System Food Tests Required Practical Enzymes and Enzyme Activity Enzymes Required Practical The Circulatory System and Heart Disease The Respiratory system Plant Tissues and Organs

Infection and Response Pathogens and Human Defences Vaccines, Antibiotics and Drug Development Monoclonal Antibodies – Triple Plant Diseases Detection and Defences – Triple

Bioenergetics Photosynthesis Photosynthesis Required Practical Aerobic and Anaerobic Respiration Exercise and Metabolism

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Photosynthesis and Cellular Respiration

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Photosynthesis vs Respiration

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Photosynthesis and plant respiration are two fundamental processes in plant biology, each playing a crucial role in the life cycle of plants. While both are vital for the survival of plants, they serve very different functions. Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce glucose and oxygen. This process is essential for the production of energy in the form of glucose, which serves as a primary energy source for the plant. On the other hand, plant respiration is the process where plants consume oxygen and use it to turn glucose into ATP, releasing carbon dioxide as a byproduct. This occurs in the mitochondria of the cells and is crucial for energy conversion that fuels all plant activities.

What is Photosynthesis?

Photosynthesis is the incredible biological process by which plants, algae, and some bacteria convert light energy into chemical energy. This process not only sustains the organism performing it but also supports most life forms on Earth by producing oxygen and organic compounds.

Chlorophyll and Sunlight

At the heart of photosynthesis lies chlorophyll, the pigment that gives plants their green color. Chlorophyll absorbs sunlight, which serves as the energy source required to drive this process.

The Stages of Photosynthesis

Photosynthesis occurs in two main stages: the light-dependent reactions and the Calvin cycle (also known as the light-independent reactions).

1. Light-Dependent Reactions: In this stage, sunlight strikes the chlorophyll in the chloroplasts, exciting electrons to a higher energy state. These high-energy electrons travel through the electron transport chain, a series of reactions that ultimately generates ATP (adenosine triphosphate) and NADPH. These molecules are rich in energy and critical for the next stage of photosynthesis.

2. The Calvin Cycle: The Calvin Cycle does not require light and takes place in the stroma of the chloroplasts. Here, the energy from ATP and NADPH powers the conversion of carbon dioxide from the atmosphere into glucose, a simple sugar. Enzymes catalyze the reactions that convert inorganic carbon into organic compounds, essentially capturing carbon in a usable form.

Oxygen and Glucose

The primary outputs of photosynthesis are oxygen and glucose. Oxygen is produced as a byproduct of the light-dependent reactions when water molecules are split to release electrons. Plants release this oxygen into the atmosphere, providing the essential element that supports most terrestrial life. Glucose, on the other hand, serves as an energy source for plants and, indirectly, for animals that consume them.

What is Plant Respiration?

Plant respiration is a crucial biological process where plants convert glucose and oxygen into energy. This process occurs in every living cell of a plant, providing the energy necessary for growth, reproduction, and other vital functions.

The Mechanics of Respiration

Plant respiration takes place in the mitochondria, often referred to as the “powerhouse” of the cell. Here, glucose molecules break down through a series of enzymatic reactions.

The Stages of Plant Respiration

Plant respiration can be divided into three main stages: glycolysis, the Krebs cycle, and the electron transport chain.

1. Glycolysis: In glycolysis, glucose molecules split into two three-carbon compounds called pyruvate. This process occurs in the cytoplasm and produces small amounts of ATP and NADH, which are used in further stages of respiration.

2. The Krebs Cycle: The Krebs cycle takes place in the mitochondria. Here, pyruvate undergoes a series of reactions that produce carbon dioxide, ATP, NADH, and FADH2. These products are critical for the final stage of respiration.

3. Electron Transport Chain: In this final stage, NADH and FADH2 generated from the previous stages donate electrons to the electron transport chain in the inner mitochondrial membrane. The flow of electrons through this chain releases energy, which is used to form a large amount of ATP. Oxygen plays a key role here, acting as the final electron acceptor and combining with hydrogen to form water.

Carbon Dioxide, Water, and ATP

The main outputs of plant respiration are carbon dioxide, water, and ATP. Carbon dioxide is released as a waste product during the Krebs cycle and is expelled through the stomata during gas exchange. Water is formed in the electron transport chain, and ATP is produced throughout respiration, providing essential energy for cellular activities.

Differences Between Photosynthesis and Plant Respiration

Key Similarities Between Photosynthesis and Plant Respiration

Despite their distinct roles in plant biology, photosynthesis and plant respiration share several important similarities that underline their interconnectedness within the life processes of plants:

• Involvement in Energy Transformation: Both processes are crucial for the energy management of plants. Photosynthesis captures energy from sunlight to produce glucose, while respiration breaks down glucose to release energy stored in its chemical bonds.
• Involvement of Carbon Compounds: Each process utilizes and produces carbon-containing compounds. Photosynthesis takes in carbon dioxide to produce glucose, a carbohydrate, whereas respiration converts this glucose back into carbon dioxide.
• Cyclic Nature: Both processes are part of a larger biological cycle. The products of photosynthesis (oxygen and glucose) are the reactants in respiration, and conversely, the products of respiration (carbon dioxide and water) are reactants in photosynthesis.
• Occurrence in Cells: Both photosynthesis and respiration occur at the cellular level, involving complex organelles specialized for each process—chloroplasts for photosynthesis and mitochondria for respiration.
• Importance to Life: Both processes are fundamental to sustaining life, not just for plants but also for other organisms. Photosynthesis provides the oxygen and organic compounds necessary for the survival of most life forms on Earth, while respiration is essential for energy production in plants and many other organisms.
• Regulation by Enzymes: Both processes are enzyme-driven, relying on specific proteins to catalyze the various chemical reactions involved in transforming molecules and releasing energy.
• Influence by Environmental Factors: Both photosynthesis and plant respiration are influenced by environmental conditions, such as temperature and water availability, which can affect their rates and efficiency.

What is the Main Difference Between Photosynthesis and Respiration?

Photosynthesis converts sunlight into glucose and oxygen, while respiration turns glucose into energy (ATP), releasing carbon dioxide.

What is the Difference Between ETC in Photosynthesis and Cellular Respiration?

The Electron Transport Chain (ETC) in photosynthesis generates energy by capturing light, while in respiration, it releases energy by breaking down glucose.

Which is Faster, Respiration or Photosynthesis?

Respiration is generally faster than photosynthesis as it occurs constantly at high rates to meet energy demands.

What Happens if Respiration Exceeds Photosynthesis?

If respiration exceeds photosynthesis, plants may deplete their glucose reserves, leading to reduced growth and vitality.

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