Subjects
Careers
Maths
Chemistry
Biology
English Lang.
History
Energy transfers (a2 only)
Infection and response
Homeostasis and response
Responding to change (a2 only)
Cell biology
Biological molecules
Organisation
Substance exchange
The control of gene expression (a2 only)
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
2o democracy and nazism: germany, 1918-1945
1f industrialisation and the people: britain, c1783-1885
Medieval period: 1066 -1509
1l the quest for political stability: germany, 1871-1991
Britain & the wider world: 1745 -1901
2d religious conflict and the church in england, c1529-c1570
The cold war
1c the tudors: england, 1485-1603
Inter-war germany
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
11
0
Eleanor
09/09/2022
Biology
Transport Across Cell Membranes Mindmap
Active transport and diffusion are crucial processes in cellular biology, governing how substances move across cell membranes. This summary explores their key differences, the effects of osmosis on plant and animal cells, and the structure and function of the cell membrane. Diffusion vs active transport in cells examples are provided to illustrate these concepts, along with detailed explanations of osmosis and its impact on different cell types.
09/09/2022
131
193
3867
10/11
Diffusion and Osmosis
Diffusion and Osmosis colorful notes (GSCE)
6
233
12/13
A level Biology - Plasma Membranes
Notes on the topic of plasma membranes related to its structure and function. Suitable for AQA Exam board.
6
33
10
osmosis notes
what is osmosis and diffusion - this work Is not my own I did write it but I copied the notes of someone else ! 💖
5
192
12/13
Osmosis, Active Transport and Diffusion
A revision sheet summarising Osmosis, Active Transport and Diffusion
6
219
12/13
AQA AS Biology 3.1.5.2 DNA replication
Class notes on DNA replication.
25
213
9
Diffusion & Osmosis
Has detailed information and diagrams about diffusion and osmosis.
Average app rating
Pupils love Knowunity
In education app charts in 17 countries
Students have uploaded notes
iOS User
Philip, iOS User
Lena, iOS user
Eleanor
@eleanor24
Active transport and diffusion are crucial processes in cellular biology, governing how substances move across cell membranes. This summary explores their key differences, the effects of osmosis on plant and animal cells, and the structure and function of the cell... Show more
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page provides a comprehensive overview of the various mechanisms of transport across cell membranes, focusing on passive and active transport across cell membranes. It illustrates the key differences between diffusion, osmosis, and active transport, along with their effects on plant and animal cells.
Definition: Diffusion is the movement of molecules down a concentration gradient from high to low concentration, requiring no energy input.
Example: Carbon dioxide diffuses out of cells from a higher concentration inside the cell to a lower concentration outside the cell.
The page explains that glucose and oxygen diffuse into cells from a higher concentration outside to a lower concentration inside, demonstrating the principle of passive transport.
Definition: Active transport involves the movement of molecules and ions from a lower concentration to a higher concentration, requiring energy input.
The document provides detailed illustrations of how osmosis affects both plant and animal cells:
Example: Animal cells placed in a solution with higher water concentration compared to their cytoplasm will gain water, swell up, and potentially burst.
Vocabulary: Turgid refers to the swollen state of a plant cell when it's full of water.
Vocabulary: Plasmolysed describes the state of a plant cell when it has lost water and the cell membrane has pulled away from the cell wall.
The page also describes the structure of the cell membrane:
Highlight: The cell membrane is composed of a phospholipid bilayer and is selectively permeable, allowing only small and soluble molecules to cross.
Definition: Osmosis is defined as the movement of water molecules from a higher water concentration to a lower water concentration through a selectively permeable membrane.
This comprehensive overview provides essential information for understanding the difference between passive and active transport across cell membranes, making it an invaluable resource for students studying osmosis and diffusion in cell membrane transport biology.
App 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
