Every living thing is made up of cells, and understanding...
Biology143 views·Updated 29 Aug 2026·2 pagesN5 Biology: Comprehensive Cell Structure Notes
E
Emily Turpie@emilyturpie_tvox
1
of 2
Core Cell Structures
Your cell membrane acts like a bouncer at a club - it decides what gets in and what stays out of every single cell. This selective barrier is found in animal, plant, and fungal cells, making it one of the most universal cellular structures.
The nucleus is essentially the cell's control centre, much like the brain in your body. It stores all the genetic information and controls what the cell does throughout its life. You'll find this command centre in animal, plant, and fungal cells.
Inside the cell, the cytoplasm provides the perfect environment for chemical reactions to occur. Think of it as the cell's workshop where most of the important cellular processes happen. The mitochondrion is where aerobic respiration takes place - this is how cells release energy from glucose to power themselves.
Quick Tip: Remember that mitochondria are often called "powerhouses of the cell" because they produce the energy (ATP) that cells need to function!
2
of 2
Specialised Cellular Components
Plant cells have some unique features that animal cells don't possess. The cell wall made of cellulose provides structural support, whilst chloroplasts carry out photosynthesis - the process that converts sunlight into food. The large vacuole stores cell sap and helps maintain the plant's shape through osmosis.
Bacterial cells are quite different from plant and animal cells. Instead of a nucleus, they have chromosomes and plasmids that control cell activity and transfer genetic information. These structures float freely in the cytoplasm rather than being enclosed in a membrane.
Ribosomes are the protein-making factories found in all cell types - animal, plant, bacterial, and fungal. They're responsible for protein synthesis, which is essential for cell growth and repair.
Remember: Cell walls aren't just for plants! Bacteria and fungi have them too, but they're made from different materials - sugars and proteins rather than cellulose.
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Biology143 views·Updated 29 Aug 2026·2 pagesN5 Biology: Comprehensive Cell Structure Notes
E
Emily Turpie@emilyturpie_tvox
Every living thing is made up of cells, and understanding what's inside them is crucial for your biology studies. These cellular components work together like a perfectly organised team to keep life running smoothly.
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of 2
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Core Cell Structures
Your cell membrane acts like a bouncer at a club - it decides what gets in and what stays out of every single cell. This selective barrier is found in animal, plant, and fungal cells, making it one of the most universal cellular structures.
The nucleus is essentially the cell's control centre, much like the brain in your body. It stores all the genetic information and controls what the cell does throughout its life. You'll find this command centre in animal, plant, and fungal cells.
Inside the cell, the cytoplasm provides the perfect environment for chemical reactions to occur. Think of it as the cell's workshop where most of the important cellular processes happen. The mitochondrion is where aerobic respiration takes place - this is how cells release energy from glucose to power themselves.
Quick Tip: Remember that mitochondria are often called "powerhouses of the cell" because they produce the energy (ATP) that cells need to function!
2
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Specialised Cellular Components
Plant cells have some unique features that animal cells don't possess. The cell wall made of cellulose provides structural support, whilst chloroplasts carry out photosynthesis - the process that converts sunlight into food. The large vacuole stores cell sap and helps maintain the plant's shape through osmosis.
Bacterial cells are quite different from plant and animal cells. Instead of a nucleus, they have chromosomes and plasmids that control cell activity and transfer genetic information. These structures float freely in the cytoplasm rather than being enclosed in a membrane.
Ribosomes are the protein-making factories found in all cell types - animal, plant, bacterial, and fungal. They're responsible for protein synthesis, which is essential for cell growth and repair.
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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.
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