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Tiny particle that can reproduce only inside the cells of living things |
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Tiny one-celled organisms, some of which cause diseases |
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Basic unit of a living organism |
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Thin layer that makes up the outside of the cell and controls what enters and leaves it |
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Cell part that controls the cell's activities |
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Jellylike material that fills mist of a cell |
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Stiff outer layer that helps keep plant cells firm |
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