Cells quiz
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What makes a salted slug shrivel?
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More questions about Cells
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What do biologists call cells using oxygen to release energy?
Answer: Respiration
Why: Plants respire too, day and night, even while their leaves photosynthesise in sunlight.
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How often is most of your gut lining replaced?
Answer: Every few days
Why: New lining cells are born in tiny pits called crypts, climb the finger-like villi and are shed from the tips.
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Where in your body are most of your own cells?
Answer: Blood
Why: Red blood cells alone are about 84% of all your cells, and they are among the smallest cells in your body.
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Where in your cells is most of the oxygen you breathe used?
Answer: Mitochondria
Why: Unlike the DNA in your nucleus, which comes from both parents, mitochondrial DNA normally comes from your mother.
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Which molecules form a cell's double layer by themselves in water?
Answer: Phospholipids
Why: A membrane is fluid: each phospholipid swaps places with a neighbour about 10 million times a second.
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What removes the webbing between an unborn baby's fingers?
Answer: Apoptosis
Why: Duck embryos hold back this cell death between their toes, which is why ducks keep webbed feet.
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