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Fun Guide: How Plants and Muscles Breathe and Move!

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flo

8/28/2025

Biology

RESPIRATION

638

Aug 28, 2025

3 pages

Fun Guide: How Plants and Muscles Breathe and Move!

user profile picture

flo

@flo_effins

Respiration and Exercise: Energy Production and Body Reactions

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Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Anaerobic Respiration and Fermentation

Anaerobic respiration varies between organisms:

  1. In humans: Glucose → Lactic Acid + Energy

  2. In plant cells: Glucose → Ethanol + Carbon Dioxide + Energy

The importance of fermentation in yeast cells is particularly evident in bread-making. This process, known as yeast fermentation, is crucial for making bread rise.

Example: During bread-making, yeast cells perform anaerobic respiration, producing carbon dioxide that causes the dough to rise.

The fermentative yield of yeast cells during this process is a key factor in determining the final quality of the bread.

Vocabulary: Metabolic reactions are the chemical processes in body cells that convert food into energy.

The importance of metabolic reactions includes:

  1. Running cellular processes
  2. Converting food into proteins and lipids
  3. Eliminating metabolic wastes

These reactions are essential for various bodily functions, from movement and thinking to growth.

Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Body Reactions During Exercise

During exercise, the body undergoes several adaptations to meet the increased energy demand:

  1. Increased Heart Rate: The heart beats faster to supply muscles with extra oxygen and remove carbon dioxide more efficiently.

  2. Enhanced Oxygen Supply: Increased oxygen supply to muscles helps reduce the rate of fatigue.

Definition: Oxygen debt is a temporary oxygen shortage in body tissues that arises from intense exercise.

Waste products produced during exercise are transported through the blood and excreted via various organs:

  • Lungs
  • Kidneys
  • Skin
  • Bowel

These adaptations help the body maintain performance during physical activity and recover afterwards.

Highlight: The blood flow to muscles during exercise increases significantly to meet the heightened oxygen demand and remove waste products efficiently.

Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Why Respiration is an Exothermic Reaction

Respiration is classified as an exothermic reaction because it releases energy into its surroundings. This process occurs when glucose combines with oxygen in the cells of our body, providing the energy necessary for various bodily functions.

Definition: An exothermic reaction is a chemical process that releases heat energy into its surroundings.

The difference between aerobic and anaerobic respiration lies in their oxygen requirements and energy yield:

  1. Aerobic Respiration:

    • Occurs in the presence of oxygen
    • Equation: Glucose + Oxygen → Carbon Dioxide + Water
    • Yields more energy
  2. Anaerobic Respiration:

    • Occurs in the absence of oxygen
    • Uses electron acceptors other than oxygen
    • Releases less energy

Highlight: All living organisms require energy to drive chemical reactions essential for life, growth, reproduction, and responding to their environment.



We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

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Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

 

Biology

638

Aug 28, 2025

3 pages

Fun Guide: How Plants and Muscles Breathe and Move!

user profile picture

flo

@flo_effins

Respiration and Exercise: Energy Production and Body Reactions

This document explores the processes of respiration, both aerobic and anaerobic, and how the body responds during exercise. It covers the differences between respiration types, fermentation in yeast cells, and the body's... Show more

Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Anaerobic Respiration and Fermentation

Anaerobic respiration varies between organisms:

  1. In humans: Glucose → Lactic Acid + Energy

  2. In plant cells: Glucose → Ethanol + Carbon Dioxide + Energy

The importance of fermentation in yeast cells is particularly evident in bread-making. This process, known as yeast fermentation, is crucial for making bread rise.

Example: During bread-making, yeast cells perform anaerobic respiration, producing carbon dioxide that causes the dough to rise.

The fermentative yield of yeast cells during this process is a key factor in determining the final quality of the bread.

Vocabulary: Metabolic reactions are the chemical processes in body cells that convert food into energy.

The importance of metabolic reactions includes:

  1. Running cellular processes
  2. Converting food into proteins and lipids
  3. Eliminating metabolic wastes

These reactions are essential for various bodily functions, from movement and thinking to growth.

Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Body Reactions During Exercise

During exercise, the body undergoes several adaptations to meet the increased energy demand:

  1. Increased Heart Rate: The heart beats faster to supply muscles with extra oxygen and remove carbon dioxide more efficiently.

  2. Enhanced Oxygen Supply: Increased oxygen supply to muscles helps reduce the rate of fatigue.

Definition: Oxygen debt is a temporary oxygen shortage in body tissues that arises from intense exercise.

Waste products produced during exercise are transported through the blood and excreted via various organs:

  • Lungs
  • Kidneys
  • Skin
  • Bowel

These adaptations help the body maintain performance during physical activity and recover afterwards.

Highlight: The blood flow to muscles during exercise increases significantly to meet the heightened oxygen demand and remove waste products efficiently.

Biology
Respiration
Why respiration is an exothermic reaction
because glucose combines with oxygen
the cells of our body and provides
energy

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Why Respiration is an Exothermic Reaction

Respiration is classified as an exothermic reaction because it releases energy into its surroundings. This process occurs when glucose combines with oxygen in the cells of our body, providing the energy necessary for various bodily functions.

Definition: An exothermic reaction is a chemical process that releases heat energy into its surroundings.

The difference between aerobic and anaerobic respiration lies in their oxygen requirements and energy yield:

  1. Aerobic Respiration:

    • Occurs in the presence of oxygen
    • Equation: Glucose + Oxygen → Carbon Dioxide + Water
    • Yields more energy
  2. Anaerobic Respiration:

    • Occurs in the absence of oxygen
    • Uses electron acceptors other than oxygen
    • Releases less energy

Highlight: All living organisms require energy to drive chemical reactions essential for life, growth, reproduction, and responding to their environment.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Smart Tools NEW

Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines

Mock Exam
Quiz
Flashcards
Essay

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.9/5

App Store

4.8/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user