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What happens during diffusion?
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Why do sperm cells have lots of mitochondria?
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What do sperm cells carry?
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What are special features in the red blood cell?
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What is step 4 to using a microscope?
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Where are leaf cells found?
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What is a root hair cell?
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What does a nerve cell look like?
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What does the flagellum allow the Euglena to do?
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What is the Euglena?