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a single-celled organism that does not have a nucleus or membrane-bound organelles; includes bacteria
organism made up of cells that have a nucleus enclosed by a membrane; includes protists, animals, plants, and fungi
one of the small structures found in the cytoplasm of a cell and that perform a specific function
property of a membrane that allows some materials to pass through while keeping others out
solution where the concentration of dissolved materials inside and outside the cell is equal; causes no change in cell size
a solution where the concentration of dissolved material inside the cell is higher than outside, causing the cell to swell
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