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T’raye
06/12/2025
Biology
Biology Cell biology ( Topic 1 ) Flashcards
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6 Dec 2025
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Cell Biology Flashcards for Topic 1 – Study Guide
T’raye
@ashani
1 / 10
Cytoplasm
The cytoplasm is basically the jelly-like substance that fills up most of your cell's interior. Think of it as the cell's workshop where all the action happens.
This is where most of the chemical reactions take place that keep your cells alive and functioning. Everything from breaking down nutrients to building new molecules happens right here in this bustling cellular environment.
Quick Tip: Remember cytoplasm as the cell's "reaction centre" - it's where the magic of life actually occurs!
Ribosomes
Ribosomes might be tiny, but they're absolutely crucial for life. These little structures are scattered throughout the cytoplasm and attached to some internal membranes.
Ribosomes are where proteins are made - and proteins are essential for practically everything your body does. From building muscles to fighting infections, it all starts with these protein factories working overtime.
Without ribosomes cranking out proteins 24/7, your cells simply couldn't survive or carry out their daily functions.
Remember: Ribosomes = protein production. Think "R" for ribosomes and "R" for making pRoteins!
Plant Cell Vacuole
Here's something that makes plant cells special - they have a massive vacuole that animal cells don't possess. This isn't just empty space; it's a crucial storage compartment.
The vacuole contains cell sap, which is basically water mixed with dissolved sugars, salts, and other important substances. This sap helps keep the plant firm and upright.
When plants wilt, it's often because their vacuoles have lost water and can't maintain the plant's structure. Pretty clever natural engineering!
Plant Power: The vacuole acts like a plant's internal water tower, keeping everything pressurised and standing tall!
Mitochondria
Meet the mitochondria - often called the powerhouses of the cell, and for good reason. These bean-shaped organelles are your cell's energy generators.
Mitochondria are where aerobic respiration takes place, converting the food you eat into usable energy (ATP). Every time you move, think, or even breathe, you're relying on these cellular power plants.
Active cells like muscle cells are packed with mitochondria because they need loads of energy to function properly.
Energy Fact: A single cell can contain hundreds or even thousands of mitochondria, depending on how much energy it needs!
Nucleus
The nucleus is essentially the cell's control centre - the boss that runs the entire operation. You can usually spot it easily as the largest, darkest structure in the cell.
The nucleus controls the cell and contains genetic material (DNA) that holds all the instructions for life. Every protein made, every chemical reaction regulated - it all comes back to commands from the nucleus.
Think of DNA as the cell's instruction manual, safely stored in the nucleus's protective environment, directing everything that happens in your body.
Control Central: The nucleus is like the cell's brain and library combined - it thinks and stores all the important information!
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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
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Best app on earth! no words because it’s too good
Thomas R
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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
Cell Biology Flashcards for Topic 1 – Study Guide
T’raye
@ashani
Cell organelles are like tiny factories inside every living cell, each with specific jobs that keep life running smoothly. Understanding what these structures do is essential for your biology studies and helps explain how all living things function.
Cytoplasm
The cytoplasm is basically the jelly-like substance that fills up most of your cell's interior. Think of it as the cell's workshop where all the action happens.
This is where most of the chemical reactions take place that keep your cells alive and functioning. Everything from breaking down nutrients to building new molecules happens right here in this bustling cellular environment.
Quick Tip: Remember cytoplasm as the cell's "reaction centre" - it's where the magic of life actually occurs!
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Ribosomes
Ribosomes might be tiny, but they're absolutely crucial for life. These little structures are scattered throughout the cytoplasm and attached to some internal membranes.
Ribosomes are where proteins are made - and proteins are essential for practically everything your body does. From building muscles to fighting infections, it all starts with these protein factories working overtime.
Without ribosomes cranking out proteins 24/7, your cells simply couldn't survive or carry out their daily functions.
Remember: Ribosomes = protein production. Think "R" for ribosomes and "R" for making pRoteins!
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Plant Cell Vacuole
Here's something that makes plant cells special - they have a massive vacuole that animal cells don't possess. This isn't just empty space; it's a crucial storage compartment.
The vacuole contains cell sap, which is basically water mixed with dissolved sugars, salts, and other important substances. This sap helps keep the plant firm and upright.
When plants wilt, it's often because their vacuoles have lost water and can't maintain the plant's structure. Pretty clever natural engineering!
Plant Power: The vacuole acts like a plant's internal water tower, keeping everything pressurised and standing tall!
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Mitochondria
Meet the mitochondria - often called the powerhouses of the cell, and for good reason. These bean-shaped organelles are your cell's energy generators.
Mitochondria are where aerobic respiration takes place, converting the food you eat into usable energy (ATP). Every time you move, think, or even breathe, you're relying on these cellular power plants.
Active cells like muscle cells are packed with mitochondria because they need loads of energy to function properly.
Energy Fact: A single cell can contain hundreds or even thousands of mitochondria, depending on how much energy it needs!
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Nucleus
The nucleus is essentially the cell's control centre - the boss that runs the entire operation. You can usually spot it easily as the largest, darkest structure in the cell.
The nucleus controls the cell and contains genetic material (DNA) that holds all the instructions for life. Every protein made, every chemical reaction regulated - it all comes back to commands from the nucleus.
Think of DNA as the cell's instruction manual, safely stored in the nucleus's protective environment, directing everything that happens in your body.
Control Central: The nucleus is like the cell's brain and library combined - it thinks and stores all the important information!
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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?
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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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Most popular content: Cell Membrane
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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