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
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
Show all topics
Medieval period: 1066 -1509
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
1l the quest for political stability: germany, 1871-1991
1f industrialisation and the people: britain, c1783-1885
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
2j america: a nation divided, c1845-1877
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
12
2
Anna-Maria Tulejova
17/04/2023
Biology
Biology revision pt1
Cell biology and microscopy: From prokaryotes to eukaryotes
This comprehensive guide covers key concepts in cell biology and microscopy, essential for GCSE and A-level Biology students. It explores:
17/04/2023
57
This page delves deeper into plant cell structure and introduces bacterial cell characteristics.
Plant cells share features with animal cells but have additional structures:
Vocabulary: Chlorophyll is the green pigment in chloroplasts that absorbs light for photosynthesis.
Bacterial cells are significantly smaller than plant and animal cells. Key features include:
Example: The absence of a nucleus in bacteria is a key point of differentiation in 10 differences between prokaryotic and eukaryotic cells.
This information is essential for understanding cell structures and their functions biology study guide free resources.
This page focuses on microscopy techniques and calculations, crucial for GCSE Biology Microscopy Required practical exercises.
Key points:
Definition: Resolution is the ability to distinguish between two points, resulting in a sharper image.
The page introduces the magnification formula:
Magnification = Image Size ÷ Real Size
Example: A specimen 50μm wide viewed under 100x magnification would have an image size of 5mm.
This information is particularly relevant for Microscopy gcse biology and Microscopes gcse biology Edexcel curricula.
This page covers practical aspects of microscopy, including slide preparation and microscope use.
Onion cell slide preparation steps:
Light microscope usage:
Highlight: These practical skills are essential for GCSE Biology Microscopy Required practical assessments and form the basis for more advanced techniques in Microscopes a level Biology OCR courses.
This final page covers scientific drawing techniques and introduces cell differentiation.
Scientific drawing guidelines:
Quote: "You add stain to a sample on a microscope slide because it helps the organism be seen clearly."
Cell differentiation is the process where a cell becomes specialized for its function. This typically occurs during organism development.
Vocabulary: Differentiation is a key concept in understanding cell structure and function PDF resources and cell structure bbc Bitesize gcse materials.
This information bridges the gap between basic cell biology and more advanced topics in B1 cell structure and transport units.
This page introduces the fundamental concepts of cell biology, focusing on the two main types of cells: prokaryotic and eukaryotic.
Prokaryotic cells are small, simple, and typically found in single-celled organisms like bacteria. They lack a true nucleus and other membrane-bound organelles.
Eukaryotic cells are larger and more complex, making up all plant and animal cells. They contain a nucleus and various organelles.
Definition: Prokaryote means "before nucleus," while eukaryote means "true nucleus."
The page also outlines the basic structure of an animal cell, including:
Highlight: Understanding the differences between prokaryotic and eukaryotic cells is crucial for GCSE Biology microscopy exam questions and forms the foundation for more advanced A level Biology OCR topics.
17
553
11
biology paper 1 knowledge
28
2774
10/11
Cell division
Mitosis and meiosis
18
1113
12/12
Mitosis and Meiosis Revision Questions
Quick revision questions based on the EDUQAS A Level Biology Specification for Component 2 Mitosis and Meiosis Topic
26
1166
10/11
Cell Division
Meiosis and Mitosis
86
503
9
Mitosis study notes year 9 revision
Contains study materials and will help with any revision needed to hopefully pass any upcoming exams year 9s good luck 😊
3
77
11
Mitosis and Meiosis
biology w pics
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
Anna-Maria Tulejova
@annatulejova_rgzq
Cell biology and microscopy: From prokaryotes to eukaryotes
This comprehensive guide covers key concepts in cell biology and microscopy, essential for GCSE and A-level Biology students. It explores:
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page delves deeper into plant cell structure and introduces bacterial cell characteristics.
Plant cells share features with animal cells but have additional structures:
Vocabulary: Chlorophyll is the green pigment in chloroplasts that absorbs light for photosynthesis.
Bacterial cells are significantly smaller than plant and animal cells. Key features include:
Example: The absence of a nucleus in bacteria is a key point of differentiation in 10 differences between prokaryotic and eukaryotic cells.
This information is essential for understanding cell structures and their functions biology study guide free resources.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page focuses on microscopy techniques and calculations, crucial for GCSE Biology Microscopy Required practical exercises.
Key points:
Definition: Resolution is the ability to distinguish between two points, resulting in a sharper image.
The page introduces the magnification formula:
Magnification = Image Size ÷ Real Size
Example: A specimen 50μm wide viewed under 100x magnification would have an image size of 5mm.
This information is particularly relevant for Microscopy gcse biology and Microscopes gcse biology Edexcel curricula.
This page covers practical aspects of microscopy, including slide preparation and microscope use.
Onion cell slide preparation steps:
Light microscope usage:
Highlight: These practical skills are essential for GCSE Biology Microscopy Required practical assessments and form the basis for more advanced techniques in Microscopes a level Biology OCR courses.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This final page covers scientific drawing techniques and introduces cell differentiation.
Scientific drawing guidelines:
Quote: "You add stain to a sample on a microscope slide because it helps the organism be seen clearly."
Cell differentiation is the process where a cell becomes specialized for its function. This typically occurs during organism development.
Vocabulary: Differentiation is a key concept in understanding cell structure and function PDF resources and cell structure bbc Bitesize gcse materials.
This information bridges the gap between basic cell biology and more advanced topics in B1 cell structure and transport units.
This page introduces the fundamental concepts of cell biology, focusing on the two main types of cells: prokaryotic and eukaryotic.
Prokaryotic cells are small, simple, and typically found in single-celled organisms like bacteria. They lack a true nucleus and other membrane-bound organelles.
Eukaryotic cells are larger and more complex, making up all plant and animal cells. They contain a nucleus and various organelles.
Definition: Prokaryote means "before nucleus," while eukaryote means "true nucleus."
The page also outlines the basic structure of an animal cell, including:
Highlight: Understanding the differences between prokaryotic and eukaryotic cells is crucial for GCSE Biology microscopy exam questions and forms the foundation for more advanced A level Biology OCR topics.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
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.
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
