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Updated Mar 15, 2026
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GCSE Biology: AQA Paper 2 - Hormones, Homeostasis, and Water Balance
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Blood Glucose Control and Diabetes
This section details how the pancreas maintains optimal blood glucose levels through hormonal control. When blood glucose is high, insulin promotes glucose uptake by cells and conversion to glycogen for storage.
Definition: Type 1 diabetes occurs when the pancreas fails to produce sufficient insulin, leading to uncontrolled blood glucose levels.
Highlight: Type 2 diabetes develops when body cells become resistant to insulin, often associated with obesity.
The text explains how glucagon, another pancreatic hormone, works to increase blood glucose when levels are too low, demonstrating negative feedback control.
Water Balance and Kidney Function
The final section covers how the body maintains water balance through kidney function and hormonal control. The kidneys regulate water and ion balance while removing waste products like urea.
Vocabulary: Deamination - The process in the liver where excess amino acids are converted to ammonia.
Example: ADH controls water reabsorption in kidney tubules when blood becomes too concentrated.
Highlight: Kidney failure can be treated through transplantation or dialysis, which removes waste products from blood three times weekly.
The text explains how the kidneys filter blood, reabsorb useful substances, and produce urine through specialized tubules.
The Endocrine System and Hormone Function
The endocrine system consists of specialized glands that secrete hormones directly into the bloodstream to regulate various body functions. These chemical messengers travel through blood to reach specific target organs and produce controlled effects.
Definition: Hormones are chemical messengers that regulate body functions by acting on specific target organs.
Highlight: The pituitary gland acts as the body's master gland, controlling other endocrine glands through hormone secretion.
Key hormones and their functions include:
Example: Adrenaline, produced by adrenal glands, increases heart rate and prepares the body for 'fight or flight' responses.
Vocabulary: Thyroxine - A hormone produced by the thyroid gland that controls metabolic rate and development.
The document explains how blood glucose regulation works through the pancreas, which monitors and controls blood sugar levels through insulin secretion.
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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
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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
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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
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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 Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
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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
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GCSE Biology: AQA Paper 2 - Hormones, Homeostasis, and Water Balance
Blood glucose regulation and hormonal control mechanisms are vital aspects of homeostasis GCSE biology topics. The endocrine system maintains internal balance through complex hormone interactions and feedback loops.
• The endocrine system uses chemical messengers (hormones) to regulate body... Show more
Blood Glucose Control and Diabetes
This section details how the pancreas maintains optimal blood glucose levels through hormonal control. When blood glucose is high, insulin promotes glucose uptake by cells and conversion to glycogen for storage.
Definition: Type 1 diabetes occurs when the pancreas fails to produce sufficient insulin, leading to uncontrolled blood glucose levels.
Highlight: Type 2 diabetes develops when body cells become resistant to insulin, often associated with obesity.
The text explains how glucagon, another pancreatic hormone, works to increase blood glucose when levels are too low, demonstrating negative feedback control.
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Water Balance and Kidney Function
The final section covers how the body maintains water balance through kidney function and hormonal control. The kidneys regulate water and ion balance while removing waste products like urea.
Vocabulary: Deamination - The process in the liver where excess amino acids are converted to ammonia.
Example: ADH controls water reabsorption in kidney tubules when blood becomes too concentrated.
Highlight: Kidney failure can be treated through transplantation or dialysis, which removes waste products from blood three times weekly.
The text explains how the kidneys filter blood, reabsorb useful substances, and produce urine through specialized tubules.
Sign up to see the contentIt's free!
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Improve your grades
Join milions of students
The Endocrine System and Hormone Function
The endocrine system consists of specialized glands that secrete hormones directly into the bloodstream to regulate various body functions. These chemical messengers travel through blood to reach specific target organs and produce controlled effects.
Definition: Hormones are chemical messengers that regulate body functions by acting on specific target organs.
Highlight: The pituitary gland acts as the body's master gland, controlling other endocrine glands through hormone secretion.
Key hormones and their functions include:
Example: Adrenaline, produced by adrenal glands, increases heart rate and prepares the body for 'fight or flight' responses.
Vocabulary: Thyroxine - A hormone produced by the thyroid gland that controls metabolic rate and development.
The document explains how blood glucose regulation works through the pancreas, which monitors and controls blood sugar levels through insulin secretion.
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Most popular content: Blood Glucose
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4.6/5
App Store
4.7/5
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 Knowunity AI. 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 Knowunity AI. 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