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Learn: Cell Biology
AQA GCSE Biology 8461 specification
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Welcome!Today we'll learn about Cell Biology. This topic focuses on understanding cell structure, function, and processes like cell division and transport. Let's get started!
What are Cells?Cells are the basic building blocks of all living organisms. They can be prokaryotic (simple, without a nucleus) or eukaryotic (complex, with a nucleus). Understanding cell structure helps us learn how organisms function.
Key Cell StructuresCells contain specialised structures called organelles. These include the nucleus (controls activities), mitochondria (energy production), and chloroplasts (photosynthesis in plants).
Quick check: Which organelle is responsible for energy production in cells?
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MicroscopyMicroscopes are used to observe cells and their structures. A light microscope magnifies objects up to 1,500 times, while an electron microscope offers much higher magnification and resolution.
A {{blank0}} microscope can magnify objects up to 1,500 times, while an electron microscope offers higher {{blank1}}.
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Cell DivisionMitosis is the process of cell division that produces two identical cells. It is crucial for growth and repair. The stages include prophase, metaphase, anaphase, and telophase.
Match the items on the left with their correct pairs on the right
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Transport MechanismsCells move substances via diffusion (movement from high to low concentration), osmosis (water movement through membranes), and active transport (energy-requiring movement against a concentration gradient).
Which of the following transport mechanisms require energy? (Select all that apply)
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Review Time!Great work! We've covered cell structure, microscopy, mitosis, and transport mechanisms. Let's test your understanding with final questions.
Which structure controls cell activities?
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Cell division by mitosis produces {{blank0}} identical cells. This process is important for {{blank1}} and repair.
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Match the items on the left with their correct pairs on the right
Start the lesson to answer this matching question

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