Maths
Chemistry
Biology
English Language
History
Responding to change (a2 only)
Infection and response
Homeostasis and response
Energy transfers (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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Britain & the wider world: 1745 -1901
1l the quest for political stability: germany, 1871-1991
The cold war
Inter-war germany
Medieval period: 1066 -1509
2d religious conflict and the church in england, c1529-c1570
2o democracy and nazism: germany, 1918-1945
1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
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Biology
8 Dec 2025
620
1 page
Communicable diseases are caused by pathogens that can be transmitted from one organism to another. These infectious agents... Show more
Ever wondered why some diseases can spread quickly through your school? That's because they're communicable diseases caused by tiny microorganisms called pathogens. These pathogens come in four main types
Bacteria reproduce rapidly and release toxins that damage your tissues, making you feel ill. Viruses can't survive on their own and need to invade your cells to reproduce. Fungi grow directly on living tissue, either as single cells or complex structures called hyphae. Protists are parasitic organisms that live on or inside your body and are often transferred by vectors (carriers like mosquitoes).
Diseases spread through different transmission methods. Direct transmission happens through physical contact like handshakes or sexual contact. Indirect transmission occurs through vectors, droplet infections , or contaminated food and water. Knowing how diseases spread helps us prevent them through simple methods like handwashing, destroying vectors, isolating infected people, and vaccination.
Did you know? Viruses aren't typically considered living organisms because they don't fulfil the seven life processes and lack cellular structures like nuclei and cytoplasm!
Measles is an excellent example of a viral disease. This highly contagious infection causes fever and red skin rashes. While most people recover, it can lead to serious complications like blindness and brain damage. Measles spreads through inhaling droplets from coughs and sneezes, making it very infectious. There's no specific treatment for measles, so prevention through vaccination is crucial. Thanks to improved living conditions and childhood vaccination programmes, measles cases have significantly decreased in the UK.
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.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
23
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Explore the role of pathogens in infectious diseases, focusing on viral infections such as measles and HIV/AIDS. This summary covers transmission methods, symptoms, and prevention strategies, including hygiene practices and vaccinations. Ideal for students studying biology and health sciences.
BiologyExplore the key concepts of infectious diseases, including bacterial, viral, and fungal pathogens. This summary covers symptoms, transmission methods, and the immune response, highlighting diseases like Salmonella, Gonorrhoea, Malaria, and Measles. Understand the role of vaccinations and antibiotics in disease prevention and treatment. Ideal for students studying infection and response in biology.
Biologytriple science infection and response detailed notes
BiologyExplore the key concepts of communicable diseases in AQA Biology, including viral, fungal, and protist pathogens. This summary covers diseases such as Measles, HIV/AIDS, Tobacco Mosaic Virus, and Malaria, detailing their transmission, symptoms, and prevention methods. Ideal for GCSE Biology students preparing for exams.
BiologyExplore the key concepts of pathogens, including viruses, bacteria, fungi, and protists, along with the immune response mechanisms such as phagocytosis and antibody production. This summary is tailored for Year 10 and 11 students studying triple biology, providing essential insights into infectious diseases and biological defenses.
BiologyExplore the key concepts of infectious diseases, including pathogens, transmission methods, symptoms, and prevention strategies. This summary covers various pathogens such as bacteria, viruses, and fungi, along with specific diseases like malaria, salmonella, and measles. Ideal for AQA Biology Paper 1 revision.
BiologyApp Store
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
Communicable diseases are caused by pathogens that can be transmitted from one organism to another. These infectious agents include bacteria, viruses, fungi, and protists, each with unique ways of causing harm to their hosts. Understanding how these diseases spread and... Show more
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Ever wondered why some diseases can spread quickly through your school? That's because they're communicable diseases caused by tiny microorganisms called pathogens. These pathogens come in four main types:
Bacteria reproduce rapidly and release toxins that damage your tissues, making you feel ill. Viruses can't survive on their own and need to invade your cells to reproduce. Fungi grow directly on living tissue, either as single cells or complex structures called hyphae. Protists are parasitic organisms that live on or inside your body and are often transferred by vectors (carriers like mosquitoes).
Diseases spread through different transmission methods. Direct transmission happens through physical contact like handshakes or sexual contact. Indirect transmission occurs through vectors, droplet infections , or contaminated food and water. Knowing how diseases spread helps us prevent them through simple methods like handwashing, destroying vectors, isolating infected people, and vaccination.
Did you know? Viruses aren't typically considered living organisms because they don't fulfil the seven life processes and lack cellular structures like nuclei and cytoplasm!
Measles is an excellent example of a viral disease. This highly contagious infection causes fever and red skin rashes. While most people recover, it can lead to serious complications like blindness and brain damage. Measles spreads through inhaling droplets from coughs and sneezes, making it very infectious. There's no specific treatment for measles, so prevention through vaccination is crucial. Thanks to improved living conditions and childhood vaccination programmes, measles cases have significantly decreased in the UK.
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.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
23
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Explore the role of pathogens in infectious diseases, focusing on viral infections such as measles and HIV/AIDS. This summary covers transmission methods, symptoms, and prevention strategies, including hygiene practices and vaccinations. Ideal for students studying biology and health sciences.
BiologyExplore the key concepts of infectious diseases, including bacterial, viral, and fungal pathogens. This summary covers symptoms, transmission methods, and the immune response, highlighting diseases like Salmonella, Gonorrhoea, Malaria, and Measles. Understand the role of vaccinations and antibiotics in disease prevention and treatment. Ideal for students studying infection and response in biology.
Biologytriple science infection and response detailed notes
BiologyExplore the key concepts of communicable diseases in AQA Biology, including viral, fungal, and protist pathogens. This summary covers diseases such as Measles, HIV/AIDS, Tobacco Mosaic Virus, and Malaria, detailing their transmission, symptoms, and prevention methods. Ideal for GCSE Biology students preparing for exams.
BiologyExplore the key concepts of pathogens, including viruses, bacteria, fungi, and protists, along with the immune response mechanisms such as phagocytosis and antibody production. This summary is tailored for Year 10 and 11 students studying triple biology, providing essential insights into infectious diseases and biological defenses.
BiologyExplore the key concepts of infectious diseases, including pathogens, transmission methods, symptoms, and prevention strategies. This summary covers various pathogens such as bacteria, viruses, and fungi, along with specific diseases like malaria, salmonella, and measles. Ideal for AQA Biology Paper 1 revision.
BiologyApp Store
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
Sociology