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Unformatted text preview: protists are used to collect excess water which moves into their cell, and periodically, "spit" the water back out into the environment. Contractile Vacuole in the Paramecium Full Empty Plant cells use osmotic pressure to their advantage, using the cell wall and central plant vacuole. As mentioned earlier, stored substances in the vacuole attract water that increases fluid pressure within the vacuole. This pressure forces the cytoplasm against the plasma membrane and cell wall, helping to keep the cell rigid, maintaining a condition of turgor. Turgor provides support and strength for herbaceous plants and other plant parts lacking secondary cell walls. When plant cells lose turgor, they wilt, a condition known biologically as plasmolysis....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10