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Why do sperm cells have lots of mitochondria?
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What is step 4 to using a microscope?
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What is the Euglena?
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How does the Amoeba move?
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What is step 3 to using a microscope?
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What is the second level of organisation?
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What does the eye spot do for the Euglena?
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What is a specialised cell?
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What does a nerve cell look like?
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What is the third level of organisation?
