biology osmosis
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9 Terms
selectively permeable membrane
allows some but not all molecules to pass through eg cell membrane
diffusion
movement of molecules from a region of high concentration to a region of low concentration
osmosis
movement of water molecules from a region of high water concentration to a region of low concentration across a semi permeable membrane
turgor pressure
outward pressure of the cytoplasm and vacuole against the cell wall of a plant
animal cells in hypotonic
gain water, swell and burst
animal cells in hypertonic
lose water, shrivel and die
plant cells in hypotonic
gain water and become turgid and strong
plant cells in hypertonic
lose water and become weak
what is used to demonstrate semi permeable membrane
visking tubing
Note 
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