Every living thing is made up of tiny building blocks...
Biology793 views·Updated 9 Aug 2026·3 pagesGCSE Biology Cells - Covering AQA Combined Science
essie@academia_angel
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Understanding Cell Types
You'll encounter two major types of cells in biology: prokaryotic cells and eukaryotic cells. The key difference is simple - prokaryotic cells (found in bacteria) don't have a nucleus, whilst eukaryotic cells (found in plants and animals) do have one.
Think of the nucleus as the cell's control centre. Animal cells are eukaryotic and contain five main features: cytoplasm, nucleus, cell membrane, mitochondria, and ribosomes.
Plant cells are also eukaryotic but have three extra features that animal cells don't: a cell wall, permanent vacuole, and chloroplasts. These extra parts help plants do things animals can't, like make their own food!
Quick Tip: Remember that plant cells have everything animal cells have, plus three extra features - they're like animal cells with bonus equipment!
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Cell Parts and Their Jobs
Each part of a cell has a specific job, like workers in a factory. The cytoplasm is a jelly-like material where most chemical reactions happen - think of it as the cell's workspace.
The nucleus contains genetic material and controls everything the cell does. The cell membrane acts like a security guard, deciding what can enter or leave the cell.
Mitochondria are the cell's power stations, releasing energy through respiration. Ribosomes are tiny protein-making machines. In plants, chloroplasts contain chlorophyll for photosynthesis, and the cell wall provides extra strength and shape.
Memory Trick: Think of mitochondria as tiny batteries - they power everything the cell does!
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of 3
Prokaryotic Cells - The Simple Ones
Bacterial cells are much simpler than plant and animal cells because they're prokaryotic. Instead of having a proper nucleus, they have free-floating DNA that looks like a single strand or small rings called plasmids.
These cells don't have chloroplasts or mitochondria either. They manage with just the basics: cytoplasm, cell membrane, cell wall, and sometimes a flagellum (a whip-like tail for movement).
Even though prokaryotic cells seem simple, they're incredibly successful - bacteria are found everywhere on Earth! They prove that you don't always need complicated parts to survive and thrive.
Fun Fact: Bacteria have been around for billions of years longer than plants and animals - sometimes simple really is better!
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Biology793 views·Updated 9 Aug 2026·3 pagesGCSE Biology Cells - Covering AQA Combined Science
essie@academia_angel
Every living thing is made up of tiny building blocks called cells, but not all cells are the same! There are two main types of cells that work in completely different ways, and understanding them will help you make sense...
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Understanding Cell Types
You'll encounter two major types of cells in biology: prokaryotic cells and eukaryotic cells. The key difference is simple - prokaryotic cells (found in bacteria) don't have a nucleus, whilst eukaryotic cells (found in plants and animals) do have one.
Think of the nucleus as the cell's control centre. Animal cells are eukaryotic and contain five main features: cytoplasm, nucleus, cell membrane, mitochondria, and ribosomes.
Plant cells are also eukaryotic but have three extra features that animal cells don't: a cell wall, permanent vacuole, and chloroplasts. These extra parts help plants do things animals can't, like make their own food!
Quick Tip: Remember that plant cells have everything animal cells have, plus three extra features - they're like animal cells with bonus equipment!
2
of 3Sign up to see the content. It's free!
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- Improve your grades
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By signing up you accept Terms of Service and Privacy Policy
Cell Parts and Their Jobs
Each part of a cell has a specific job, like workers in a factory. The cytoplasm is a jelly-like material where most chemical reactions happen - think of it as the cell's workspace.
The nucleus contains genetic material and controls everything the cell does. The cell membrane acts like a security guard, deciding what can enter or leave the cell.
Mitochondria are the cell's power stations, releasing energy through respiration. Ribosomes are tiny protein-making machines. In plants, chloroplasts contain chlorophyll for photosynthesis, and the cell wall provides extra strength and shape.
Memory Trick: Think of mitochondria as tiny batteries - they power everything the cell does!
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Prokaryotic Cells - The Simple Ones
Bacterial cells are much simpler than plant and animal cells because they're prokaryotic. Instead of having a proper nucleus, they have free-floating DNA that looks like a single strand or small rings called plasmids.
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Even though prokaryotic cells seem simple, they're incredibly successful - bacteria are found everywhere on Earth! They prove that you don't always need complicated parts to survive and thrive.
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