AutomaticPump

Monday, May 31, 2004

Cell, The vacuole

Most plant cells contain one or more membrane-bound vesicles called vacuoles. Within the vacuole is the cell sap, a water solution of salts and sugars kept at high concentration by the active transport of ions through permeases in the vacuole membrane. This high concentration causes the entry, via osmosis, of water into the vacuole, which in turn expands the vacuole

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