Subjects
Maths
Biology
Chemistry
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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1l the quest for political stability: germany, 1871-1991
Britain & the wider world: 1745 -1901
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
Show all topics
Biology
5 Dec 2025
426
35 pages
Maria @mari_maria0627
Your body is like a well-organised factory where millions of tiny components work together to keep you alive.... Show more
Think of cells as miniature cities, each with specialised districts that handle different jobs. The cell membrane acts like a selective bouncer, controlling what gets in and out through its phospholipid bilayer structure. It's basically your cell's security system.
The nucleus is the command centre, surrounded by a double membrane with pores that allow important messages to pass through. Inside, your DNA sits like a master blueprint, controlling everything the cell does.
Ribosomes are the protein factories - these RNA and protein structures can float freely or attach to the rough endoplasmic reticulum (ER). When ribosomes dock onto the ER, it creates a protein assembly line that modifies and processes new proteins.
Remember Each organelle's structure directly relates to its job - flat cells for quick transport, cube-shaped cells for secretion, and column-like cells for absorption.
The smooth ER looks similar to rough ER but without the ribosomes - it's your cell's chemical processing plant, handling lipid synthesis and detoxification. Meanwhile, mitochondria are the powerhouses with their distinctive double membranes and folded cristae that maximise energy production.
Centrioles might seem insignificant, but these cylindrical structures made of microtubules are crucial when cells divide. They organise the cellular scaffolding that pulls chromosomes apart during cell division.
Don't underestimate lysosomes - these membrane-bound vesicles are like cellular recycling centres, breaking down waste and foreign materials with their digestive enzymes. The Golgi apparatus works as the cell's postal service, modifying and packaging proteins before shipping them to their destinations.
Key Point Energy production in mitochondria through cellular respiration is what keeps every cell function running smoothly.
Epithelial tissues are like your body's protective wallpaper, but each type has a specific design for its job. Simple epithelial tissues consist of just one layer of cells, making them perfect for areas where substances need to pass through quickly.
Simple squamous epithelium features flat, scale-like cells that allow rapid diffusion - you'll find these in your lung alveoli and blood vessels. Simple cuboidal epithelium has cube-shaped cells designed for secretion and absorption, working hard in your kidney tubules.
Simple columnar epithelium uses tall, column-like cells for heavy-duty absorption and secretion in your digestive tract. The specialised simple ciliated epithelium adds tiny hairs (cilia) that sweep substances along, like in your fallopian tubes and respiratory tract.
Study Tip Link each tissue's shape to its function - flat for quick transport, cube for secretion, tall columns for maximum absorption.
When your body needs serious protection, it uses compound (stratified) epithelial tissues with multiple layers. Stratified squamous epithelium stacks cells like bricks, with flattened cells on top - perfect for high-wear areas like your mouth and oesophagus.
The ultimate protection comes from keratinized stratified squamous epithelium in your skin's epidermis. This tissue adds a tough keratin layer on top, creating a waterproof barrier that prevents water loss and mechanical damage.
The beauty of epithelial tissue lies in how structure matches function perfectly. Those simple squamous cells in your lungs are paper-thin for rapid gas exchange, whilst your skin's multiple keratinized layers create an impenetrable fortress against the outside world.
Real-World Connection Think about how your skin protects you from water when swimming, whilst your lung tissue allows oxygen to pass through instantly.
Connective tissues are your body's unsung heroes, providing structure and transport throughout your system. Blood breaks the mould with its liquid matrix (plasma) carrying red blood cells, white blood cells, and platelets - it's basically your body's transport network and defence system rolled into one.
Cartilage offers flexible support with its chondrocytes embedded in a collagen matrix. You've got three types hyaline cartilage in your nose and joints, elastic cartilage in your ears, and tough fibrocartilage in your spine's discs.
Bone provides the ultimate structural support with its calcified tissue and osteocytes. Compact bone forms the dense outer layer, whilst spongy bone fills the interior. Areolar tissue acts like biological bubble wrap, filling spaces between organs with its loose fibre network.
Memory Trick Blood = transport, cartilage = flexible support, bone = rigid structure, areolar = space filler.
Adipose tissue consists of specialised fat-storing cells called adipocytes. Don't think of fat as just excess weight - it's your body's energy bank account, insulation system, and protective cushioning all in one. You'll find it beneath your skin and surrounding vital organs.
Your muscular system includes major players like the deltoid, pectoralis major, biceps, and triceps in your upper body, plus the powerful gluteus maximus, quadriceps, and hamstrings below. Each muscle cell is packed with mitochondria for energy and stores glycogen as a readily available fuel source.
Understanding muscle anatomy helps you appreciate how these tissues work together. Whether you're lifting, running, or simply maintaining posture, your muscles rely on stored energy and efficient cellular machinery.
Practical Note The glycogen stored in your muscles provides immediate energy for movement - that's why athletes focus on proper nutrition.
Your body uses three distinct muscle types, each perfectly designed for its role. Striated (skeletal) muscle features long, cylindrical fibres with visible stripes under a microscope. These multinucleated powerhouses give you voluntary control but fatigue quickly with intense use.
Non-striated (smooth) muscle takes a different approach with spindle-shaped cells lacking striations. Found in organ walls like your stomach and blood vessels, these single-nucleus cells work involuntarily with slow, sustained contractions that rarely tire.
Cardiac muscle combines the best of both worlds - it has striations like skeletal muscle but works involuntarily like smooth muscle. Its branched fibres with intercalated discs create the rhythmic contractions that keep your heart beating throughout your life.
Key Difference Voluntary vs involuntary control is the major distinction - you choose to move skeletal muscles, but smooth and cardiac muscles work automatically.
The three muscle types showcase brilliant biological engineering. Skeletal muscles contract rapidly for precise movements but tire quickly - perfect for activities requiring conscious control. Smooth muscles prioritise endurance over speed, maintaining organ function without conscious effort.
Cardiac muscle strikes the perfect balance with moderate contraction speed and exceptional fatigue resistance. Most cardiac cells have one nucleus (occasionally two), and their intercalated discs ensure coordinated heart contractions.
Each muscle type's cellular structure directly supports its function. Skeletal muscle's multiple nuclei support rapid protein synthesis for quick contractions, whilst smooth muscle's single nucleus suits its slower, sustained work. Cardiac muscle's branched structure with intercalated discs creates the electrical connections needed for synchronized heartbeats.
Real-World Application Understanding these differences explains why you can sprint briefly but your heart beats continuously, and why your digestive system works while you sleep.
Neurons are your body's electrical wiring, transmitting signals at incredible speeds throughout your nervous system. Each neuron has four key parts the cell body (soma) containing the nucleus, branch-like dendrites that receive incoming signals, a long axon that carries signals away, and axon terminals that release chemical messengers.
Your nervous system uses three types of neurons for different jobs. Sensory neurons carry information from your senses to your brain and spinal cord - they're your body's information gatherers. Motor neurons work in reverse, transmitting signals from your central nervous system to muscles and glands to create movement and responses.
Interneurons are the connectors, linking neurons within your central nervous system to process and interpret information. Think of them as the processors that turn raw sensory input into meaningful responses.
Visual Memory Picture dendrites as tree branches collecting signals, the axon as a electrical cable, and terminals as broadcasting stations.
Neuroglia (glial cells) are the unsung heroes of your nervous system - they don't transmit signals but keep neurons functioning perfectly. In your central nervous system, astrocytes act like cellular housekeepers, providing nutrients and forming the blood-brain barrier that protects your brain from toxins.
Oligodendrocytes wrap neurons in myelin sheaths that speed up signal transmission, whilst microglia patrol as immune cells, and ependymal cells produce the cerebrospinal fluid that cushions your brain.
Your peripheral nervous system has its own support crew Schwann cells create myelin sheaths outside the brain and spinal cord, whilst satellite cells surround and support neuron cell bodies in clusters called ganglia.
Bottom Line Neurons grab the spotlight for transmitting signals, but neuroglia create the perfect environment for neurons to work efficiently - teamwork at the cellular level.
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.
17
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Explore the key stages and significance of meiosis in sexual reproduction. This summary covers the differences between meiosis and mitosis, the process of crossing over, and how genetic variation is achieved through independent segregation. Ideal for A-level biology students.
BiologyExplore the eight stages of meiosis, including Prophase I, Metaphase I, Anaphase I, Telophase I, and their counterparts in Meiosis II. Understand key processes like crossing over, independent assortment, and the formation of haploid gametes. This summary provides a clear breakdown of meiosis, essential for biology students studying cell division.
BiologyExplore the detailed stages of meiosis, including meiosis I and II, and their significance in producing haploid gametes. This summary covers key concepts such as crossing over, independent assortment, and cytokinesis, essential for understanding cell division in A Level Biology. Ideal for students preparing for exams or needing a concise reference.
BiologyComprehensive overview of genetics and inheritance for EDUQAS A Level Biology. This resource covers key concepts such as Mendelian genetics, sex-linked traits, mutations, and patterns of inheritance including monohybrid and dihybrid crosses. Ideal for revision and understanding complex genetic principles.
BiologyExplore key concepts in cell biology and genetics, including somatic cell division, stem cell types, DNA structure, gene expression, and mutations. This resource provides essential insights for Higher Human Biology Unit 1, featuring flashcards and mindmap points for effective study.
BiologyExplore the key concepts of chromosomal mutations, including types such as deletion, duplication, inversion, and translocation. Understand single gene mutations like missense, nonsense, and splice-site mutations, and their impact on protein synthesis. This summary is essential for SQA Higher Human Biology students focusing on genetic mutations and their implications.
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
Maria
@mari_maria0627
Your body is like a well-organised factory where millions of tiny components work together to keep you alive. Understanding cells, tissues, and organs isn't just about memorising parts - it's about seeing how your body's incredible design makes everything from... Show more
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Think of cells as miniature cities, each with specialised districts that handle different jobs. The cell membrane acts like a selective bouncer, controlling what gets in and out through its phospholipid bilayer structure. It's basically your cell's security system.
The nucleus is the command centre, surrounded by a double membrane with pores that allow important messages to pass through. Inside, your DNA sits like a master blueprint, controlling everything the cell does.
Ribosomes are the protein factories - these RNA and protein structures can float freely or attach to the rough endoplasmic reticulum (ER). When ribosomes dock onto the ER, it creates a protein assembly line that modifies and processes new proteins.
Remember: Each organelle's structure directly relates to its job - flat cells for quick transport, cube-shaped cells for secretion, and column-like cells for absorption.
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Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The smooth ER looks similar to rough ER but without the ribosomes - it's your cell's chemical processing plant, handling lipid synthesis and detoxification. Meanwhile, mitochondria are the powerhouses with their distinctive double membranes and folded cristae that maximise energy production.
Centrioles might seem insignificant, but these cylindrical structures made of microtubules are crucial when cells divide. They organise the cellular scaffolding that pulls chromosomes apart during cell division.
Don't underestimate lysosomes - these membrane-bound vesicles are like cellular recycling centres, breaking down waste and foreign materials with their digestive enzymes. The Golgi apparatus works as the cell's postal service, modifying and packaging proteins before shipping them to their destinations.
Key Point: Energy production in mitochondria through cellular respiration is what keeps every cell function running smoothly.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Epithelial tissues are like your body's protective wallpaper, but each type has a specific design for its job. Simple epithelial tissues consist of just one layer of cells, making them perfect for areas where substances need to pass through quickly.
Simple squamous epithelium features flat, scale-like cells that allow rapid diffusion - you'll find these in your lung alveoli and blood vessels. Simple cuboidal epithelium has cube-shaped cells designed for secretion and absorption, working hard in your kidney tubules.
Simple columnar epithelium uses tall, column-like cells for heavy-duty absorption and secretion in your digestive tract. The specialised simple ciliated epithelium adds tiny hairs (cilia) that sweep substances along, like in your fallopian tubes and respiratory tract.
Study Tip: Link each tissue's shape to its function - flat for quick transport, cube for secretion, tall columns for maximum absorption.
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Join milions of students
By signing up you accept Terms of Service and Privacy Policy
When your body needs serious protection, it uses compound (stratified) epithelial tissues with multiple layers. Stratified squamous epithelium stacks cells like bricks, with flattened cells on top - perfect for high-wear areas like your mouth and oesophagus.
The ultimate protection comes from keratinized stratified squamous epithelium in your skin's epidermis. This tissue adds a tough keratin layer on top, creating a waterproof barrier that prevents water loss and mechanical damage.
The beauty of epithelial tissue lies in how structure matches function perfectly. Those simple squamous cells in your lungs are paper-thin for rapid gas exchange, whilst your skin's multiple keratinized layers create an impenetrable fortress against the outside world.
Real-World Connection: Think about how your skin protects you from water when swimming, whilst your lung tissue allows oxygen to pass through instantly.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Connective tissues are your body's unsung heroes, providing structure and transport throughout your system. Blood breaks the mould with its liquid matrix (plasma) carrying red blood cells, white blood cells, and platelets - it's basically your body's transport network and defence system rolled into one.
Cartilage offers flexible support with its chondrocytes embedded in a collagen matrix. You've got three types: hyaline cartilage in your nose and joints, elastic cartilage in your ears, and tough fibrocartilage in your spine's discs.
Bone provides the ultimate structural support with its calcified tissue and osteocytes. Compact bone forms the dense outer layer, whilst spongy bone fills the interior. Areolar tissue acts like biological bubble wrap, filling spaces between organs with its loose fibre network.
Memory Trick: Blood = transport, cartilage = flexible support, bone = rigid structure, areolar = space filler.
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Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Adipose tissue consists of specialised fat-storing cells called adipocytes. Don't think of fat as just excess weight - it's your body's energy bank account, insulation system, and protective cushioning all in one. You'll find it beneath your skin and surrounding vital organs.
Your muscular system includes major players like the deltoid, pectoralis major, biceps, and triceps in your upper body, plus the powerful gluteus maximus, quadriceps, and hamstrings below. Each muscle cell is packed with mitochondria for energy and stores glycogen as a readily available fuel source.
Understanding muscle anatomy helps you appreciate how these tissues work together. Whether you're lifting, running, or simply maintaining posture, your muscles rely on stored energy and efficient cellular machinery.
Practical Note: The glycogen stored in your muscles provides immediate energy for movement - that's why athletes focus on proper nutrition.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Your body uses three distinct muscle types, each perfectly designed for its role. Striated (skeletal) muscle features long, cylindrical fibres with visible stripes under a microscope. These multinucleated powerhouses give you voluntary control but fatigue quickly with intense use.
Non-striated (smooth) muscle takes a different approach with spindle-shaped cells lacking striations. Found in organ walls like your stomach and blood vessels, these single-nucleus cells work involuntarily with slow, sustained contractions that rarely tire.
Cardiac muscle combines the best of both worlds - it has striations like skeletal muscle but works involuntarily like smooth muscle. Its branched fibres with intercalated discs create the rhythmic contractions that keep your heart beating throughout your life.
Key Difference: Voluntary vs involuntary control is the major distinction - you choose to move skeletal muscles, but smooth and cardiac muscles work automatically.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The three muscle types showcase brilliant biological engineering. Skeletal muscles contract rapidly for precise movements but tire quickly - perfect for activities requiring conscious control. Smooth muscles prioritise endurance over speed, maintaining organ function without conscious effort.
Cardiac muscle strikes the perfect balance with moderate contraction speed and exceptional fatigue resistance. Most cardiac cells have one nucleus (occasionally two), and their intercalated discs ensure coordinated heart contractions.
Each muscle type's cellular structure directly supports its function. Skeletal muscle's multiple nuclei support rapid protein synthesis for quick contractions, whilst smooth muscle's single nucleus suits its slower, sustained work. Cardiac muscle's branched structure with intercalated discs creates the electrical connections needed for synchronized heartbeats.
Real-World Application: Understanding these differences explains why you can sprint briefly but your heart beats continuously, and why your digestive system works while you sleep.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Neurons are your body's electrical wiring, transmitting signals at incredible speeds throughout your nervous system. Each neuron has four key parts: the cell body (soma) containing the nucleus, branch-like dendrites that receive incoming signals, a long axon that carries signals away, and axon terminals that release chemical messengers.
Your nervous system uses three types of neurons for different jobs. Sensory neurons carry information from your senses to your brain and spinal cord - they're your body's information gatherers. Motor neurons work in reverse, transmitting signals from your central nervous system to muscles and glands to create movement and responses.
Interneurons are the connectors, linking neurons within your central nervous system to process and interpret information. Think of them as the processors that turn raw sensory input into meaningful responses.
Visual Memory: Picture dendrites as tree branches collecting signals, the axon as a electrical cable, and terminals as broadcasting stations.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Neuroglia (glial cells) are the unsung heroes of your nervous system - they don't transmit signals but keep neurons functioning perfectly. In your central nervous system, astrocytes act like cellular housekeepers, providing nutrients and forming the blood-brain barrier that protects your brain from toxins.
Oligodendrocytes wrap neurons in myelin sheaths that speed up signal transmission, whilst microglia patrol as immune cells, and ependymal cells produce the cerebrospinal fluid that cushions your brain.
Your peripheral nervous system has its own support crew: Schwann cells create myelin sheaths outside the brain and spinal cord, whilst satellite cells surround and support neuron cell bodies in clusters called ganglia.
Bottom Line: Neurons grab the spotlight for transmitting signals, but neuroglia create the perfect environment for neurons to work efficiently - teamwork at the cellular level.
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.
17
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Explore the key stages and significance of meiosis in sexual reproduction. This summary covers the differences between meiosis and mitosis, the process of crossing over, and how genetic variation is achieved through independent segregation. Ideal for A-level biology students.
BiologyExplore the eight stages of meiosis, including Prophase I, Metaphase I, Anaphase I, Telophase I, and their counterparts in Meiosis II. Understand key processes like crossing over, independent assortment, and the formation of haploid gametes. This summary provides a clear breakdown of meiosis, essential for biology students studying cell division.
BiologyExplore the detailed stages of meiosis, including meiosis I and II, and their significance in producing haploid gametes. This summary covers key concepts such as crossing over, independent assortment, and cytokinesis, essential for understanding cell division in A Level Biology. Ideal for students preparing for exams or needing a concise reference.
BiologyComprehensive overview of genetics and inheritance for EDUQAS A Level Biology. This resource covers key concepts such as Mendelian genetics, sex-linked traits, mutations, and patterns of inheritance including monohybrid and dihybrid crosses. Ideal for revision and understanding complex genetic principles.
BiologyExplore key concepts in cell biology and genetics, including somatic cell division, stem cell types, DNA structure, gene expression, and mutations. This resource provides essential insights for Higher Human Biology Unit 1, featuring flashcards and mindmap points for effective study.
BiologyExplore the key concepts of chromosomal mutations, including types such as deletion, duplication, inversion, and translocation. Understand single gene mutations like missense, nonsense, and splice-site mutations, and their impact on protein synthesis. This summary is essential for SQA Higher Human Biology students focusing on genetic mutations and their implications.
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
