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2
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an organism made up of cells that have a nucleus enclosed by a membrane
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3
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the special, normal, or proper activity of an organ or part
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6
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the organelle that packages and distributes proteins
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8
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a group of similar cells that perform a common function
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10
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a group of organs that work together to perform body functions
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11
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is the organelle in which sugar is broken down to produce energy
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12
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is the protective layer that protects the cell
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14
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an organism that consists of a single cell that does not have a nucleus
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16
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is a complex sugar that most animals cannot digest
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17
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structures that perform specific functions within the cell
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18
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is a rigid structure that gives support to a cell
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