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Definition
| basic unit of all forms of life |
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Term
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Definition
| fundamental concept of biology that states that all living things are composed of cells; that cells are the basic units of structure and function in living things; and that new cells are produced from existing cells |
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Definition
| thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell |
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Term
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Definition
| unicellular organism that lacks a nucleus |
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Definition
| organism whose cells contain a nucleus |
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Term
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Definition
| the center of an atom, which contains the protons and neutrons |
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