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2 Jan 2026
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GCSE Biology Homeostasis and Response: Exam Questions, Answers, and Revision Notes
M
Mia Fox
@miafox_gftb
1 / 7
Page 2: The Brain and Eye Structure
This section details the anatomy and function of the brain and eye, crucial components in the body's sensory and control systems.
Definition: The cerebral cortex controls consciousness, intelligence, memory, and language.
Highlight: The eye's ability to focus on objects at different distances involves changes in lens shape through ciliary muscle action.
Example: Long-sightedness (hyperopia) occurs when the eye cannot focus on near objects and requires convex lenses for correction.
Vocabulary: Accommodation refers to the eye's ability to adjust its focus for objects at different distances.
Page 3: Temperature Regulation and Endocrine System
This page covers thermoregulation and introduces the endocrine system's role in maintaining homeostasis.
Definition: The endocrine system uses hormones as chemical messengers to regulate body functions.
Highlight: Body temperature regulation involves both behavioral and physiological responses.
Example: When too hot, blood vessels dilate (vasodilation) and sweating increases to cool the body.
Vocabulary: Vasodilation is the widening of blood vessels to increase blood flow near the skin's surface.
Page 4-7:
Hormonal Control and Blood Glucose
This section examines hormonal systems, particularly focusing on blood glucose regulation through insulin and glucagon.
Definition: Hormones are chemical messengers that regulate body functions over longer periods compared to nerves.
Highlight: Understanding diabetes and glucose regulation is essential for homeostasis gcse exam questions pdf.
Water and Ion Balance
This section details how the body maintains water and ion balance through kidney function and hormonal control.
Example: ADH controls water reabsorption in the kidneys through negative feedback.
Vocabulary:
- ADH: Anti-Diuretic Hormone
- Osmosis: Movement of water across cell membranes
Menstrual Cycle and Hormones
This section explains the menstrual cycle stages and the hormones involved in reproduction.
Definition: The menstrual cycle is controlled by various hormones including FSH, LH, estrogen, and progesterone.
Example: The cycle consists of four main stages, including menstruation, proliferation, ovulation, and maintenance.
Page 1: Introduction to Homeostasis and the Nervous System
This page introduces fundamental concepts of homeostasis and the nervous system's role in maintaining internal balance. The content explains how organisms respond to environmental changes through coordinated systems.
Definition: Homeostasis is the maintenance of optimal conditions for cellular processes through regulation of internal conditions.
Highlight: Negative feedback systems are crucial for maintaining homeostasis, involving receptors, coordination centers, and effectors.
Example: The regulation of temperature, CO2 levels, and blood sugar demonstrates homeostatic control.
Vocabulary: Synapses are gaps between neurons where neurotransmitters facilitate signal transmission.
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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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
GCSE Biology Homeostasis and Response: Exam Questions, Answers, and Revision Notes
M
Mia Fox
@miafox_gftb
Homeostasis and Response in Biology is a comprehensive study of how organisms maintain internal stability through various control mechanisms and responses to environmental changes.
Key points:
- Explores fundamental concepts of homeostasis and negative feedback systems
- Details the structure and function... Show more
Page 2: The Brain and Eye Structure
This section details the anatomy and function of the brain and eye, crucial components in the body's sensory and control systems.
Definition: The cerebral cortex controls consciousness, intelligence, memory, and language.
Highlight: The eye's ability to focus on objects at different distances involves changes in lens shape through ciliary muscle action.
Example: Long-sightedness (hyperopia) occurs when the eye cannot focus on near objects and requires convex lenses for correction.
Vocabulary: Accommodation refers to the eye's ability to adjust its focus for objects at different distances.
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Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Page 3: Temperature Regulation and Endocrine System
This page covers thermoregulation and introduces the endocrine system's role in maintaining homeostasis.
Definition: The endocrine system uses hormones as chemical messengers to regulate body functions.
Highlight: Body temperature regulation involves both behavioral and physiological responses.
Example: When too hot, blood vessels dilate (vasodilation) and sweating increases to cool the body.
Vocabulary: Vasodilation is the widening of blood vessels to increase blood flow near the skin's surface.
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Page 4-7:
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Hormonal Control and Blood Glucose
This section examines hormonal systems, particularly focusing on blood glucose regulation through insulin and glucagon.
Definition: Hormones are chemical messengers that regulate body functions over longer periods compared to nerves.
Highlight: Understanding diabetes and glucose regulation is essential for homeostasis gcse exam questions pdf.
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
Water and Ion Balance
This section details how the body maintains water and ion balance through kidney function and hormonal control.
Example: ADH controls water reabsorption in the kidneys through negative feedback.
Vocabulary:
- ADH: Anti-Diuretic Hormone
- Osmosis: Movement of water across cell membranes
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
Menstrual Cycle and Hormones
This section explains the menstrual cycle stages and the hormones involved in reproduction.
Definition: The menstrual cycle is controlled by various hormones including FSH, LH, estrogen, and progesterone.
Example: The cycle consists of four main stages, including menstruation, proliferation, ovulation, and maintenance.
Sign up to see the contentIt's free!
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Improve your grades
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Page 1: Introduction to Homeostasis and the Nervous System
This page introduces fundamental concepts of homeostasis and the nervous system's role in maintaining internal balance. The content explains how organisms respond to environmental changes through coordinated systems.
Definition: Homeostasis is the maintenance of optimal conditions for cellular processes through regulation of internal conditions.
Highlight: Negative feedback systems are crucial for maintaining homeostasis, involving receptors, coordination centers, and effectors.
Example: The regulation of temperature, CO2 levels, and blood sugar demonstrates homeostatic control.
Vocabulary: Synapses are gaps between neurons where neurotransmitters facilitate signal transmission.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and 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.
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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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
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
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
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 apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user