| Pronunciation: | | sel wol
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 WordNet Dictionary |
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| | Definition: | |
[n] a thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cell |
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| | Synonyms: | | cell membrane, plasma membrane |
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| | See Also: | | cell, semipermeable membrane |
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| Biology Dictionary |
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| | Definition: | | A structure that forms the outer surface of plant cells, fungi cells, and certain bacterial cells (the gram-positive species) and is on the outside of the cell membrane. The cell wall is a rigid structure which helps the cell keep its shape and gives the cell strength. |
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