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nicole roberts
31/08/2025
Biology
cell division
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31 Aug 2025
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Cell Division GCSE WJEC Unit 2B PDF and Answers - Learn About Mitosis, Meiosis, and Cancer
nicole roberts
@nicoleroberts
Comparing Mitosis and Meiosis
This page provides a detailed comparison between mitosis and meiosis, two fundamental processes in cell division GCSE WJEC unit 2b. The information is presented in a clear, comparative format to highlight the key differences between these two types of cell division.
Mitosis produces two daughter cells that are genetically identical to the parent cell. These daughter cells are diploid, meaning they have 46 chromosomes (23 pairs). Mitosis is crucial for growth, repair, and replacement of damaged cells in an organism.
Highlight: Mitosis is essential for an organism's growth and maintenance of tissues.
In contrast, meiosis produces four daughter cells that are genetically different from the parent cell and each other. These daughter cells are haploid, containing only 23 chromosomes (unpaired). Meiosis is vital for the formation of gametes during sexual reproduction.
Definition: Haploid cells have half the number of chromosomes compared to the parent cell.
The page also introduces the concept of uncontrolled cell division, which is linked to cancer. Cancer is described as a non-communicable disease where uncontrolled mitosis leads to the formation of a tumor. If cancer cells enter the bloodstream, they can spread to other organs and form new tumors.
Vocabulary: A tumor is an abnormal mass of tissue resulting from uncontrolled cell division.
Lastly, the page touches on cell differentiation, which is the process that produces specialized cells carrying out specific functions. Once a cell differentiates, it cannot divide to make an unspecialized cell.
Example: Nerve cells and muscle cells are examples of differentiated cells with specific functions.
Cell Division and Chromosomes
This page introduces the fundamental concepts of cell division and chromosomes in GCSE Biology Unit 2 WJEC. Chromosomes are defined as linear DNA molecules tightly coiled around proteins, carrying genetic information in the form of genes. They are found in pairs, with one chromosome from each parent.
Vocabulary: Chromosomes are linear DNA molecules tightly coiled around proteins, carrying genetic information in genes.
Human body cells contain 23 pairs of chromosomes, totaling 46. These pairs are not identical, as they contain different alleles, which are versions of a gene. The concept of sex chromosomes is also introduced, explaining that males have an X and Y chromosome, while females have two X chromosomes.
Definition: Alleles are different versions of the same gene.
The page then delves into two types of cell division: meiosis and mitosis. Meiosis is described as a reduction division that creates four genetically different daughter cells called gametes. This process involves two divisions and produces cells with half the number of chromosomes.
Highlight: Meiosis is crucial for creating genetic variation and ensuring the resultant zygote has a full set of chromosomes.
Mitosis, on the other hand, is defined as the division of a cell to produce two genetically identical daughter cells with a full set of chromosomes.
Example: Mitosis is important for an organism's growth, replacement of old cells, and repair of damaged tissues.
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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
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
Cell Division GCSE WJEC Unit 2B PDF and Answers - Learn About Mitosis, Meiosis, and Cancer
nicole roberts
@nicoleroberts
Cell division is a crucial process in biology, essential for growth, repair, and reproduction. This summary covers key concepts of WJEC GCSE Biology Unit 2, focusing on cell division, mitosis, meiosis, and related topics.
- Chromosomes are... Show more
Comparing Mitosis and Meiosis
This page provides a detailed comparison between mitosis and meiosis, two fundamental processes in cell division GCSE WJEC unit 2b. The information is presented in a clear, comparative format to highlight the key differences between these two types of cell division.
Mitosis produces two daughter cells that are genetically identical to the parent cell. These daughter cells are diploid, meaning they have 46 chromosomes (23 pairs). Mitosis is crucial for growth, repair, and replacement of damaged cells in an organism.
Highlight: Mitosis is essential for an organism's growth and maintenance of tissues.
In contrast, meiosis produces four daughter cells that are genetically different from the parent cell and each other. These daughter cells are haploid, containing only 23 chromosomes (unpaired). Meiosis is vital for the formation of gametes during sexual reproduction.
Definition: Haploid cells have half the number of chromosomes compared to the parent cell.
The page also introduces the concept of uncontrolled cell division, which is linked to cancer. Cancer is described as a non-communicable disease where uncontrolled mitosis leads to the formation of a tumor. If cancer cells enter the bloodstream, they can spread to other organs and form new tumors.
Vocabulary: A tumor is an abnormal mass of tissue resulting from uncontrolled cell division.
Lastly, the page touches on cell differentiation, which is the process that produces specialized cells carrying out specific functions. Once a cell differentiates, it cannot divide to make an unspecialized cell.
Example: Nerve cells and muscle cells are examples of differentiated cells with specific functions.
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
Cell Division and Chromosomes
This page introduces the fundamental concepts of cell division and chromosomes in GCSE Biology Unit 2 WJEC. Chromosomes are defined as linear DNA molecules tightly coiled around proteins, carrying genetic information in the form of genes. They are found in pairs, with one chromosome from each parent.
Vocabulary: Chromosomes are linear DNA molecules tightly coiled around proteins, carrying genetic information in genes.
Human body cells contain 23 pairs of chromosomes, totaling 46. These pairs are not identical, as they contain different alleles, which are versions of a gene. The concept of sex chromosomes is also introduced, explaining that males have an X and Y chromosome, while females have two X chromosomes.
Definition: Alleles are different versions of the same gene.
The page then delves into two types of cell division: meiosis and mitosis. Meiosis is described as a reduction division that creates four genetically different daughter cells called gametes. This process involves two divisions and produces cells with half the number of chromosomes.
Highlight: Meiosis is crucial for creating genetic variation and ensuring the resultant zygote has a full set of chromosomes.
Mitosis, on the other hand, is defined as the division of a cell to produce two genetically identical daughter cells with a full set of chromosomes.
Example: Mitosis is important for an organism's growth, replacement of old cells, and repair of damaged tissues.
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.
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