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Osmosis. Water Concentrations Movement of water molecules (H20) across a permeable membrane. Molecules move from area of high concentrations to areas of low concentrations. Aims to equalize concentration inside and outside the cell. 3 Osmosis Situations Isotonic Hypotonic Hypertonic.
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Water Concentrations • Movement of water molecules (H20) across a permeable membrane. • Molecules move from area of high concentrations to areas of low concentrations. • Aims to equalize concentration inside and outside the cell. • 3 Osmosis Situations • Isotonic • Hypotonic • Hypertonic Osmosis
Iso-equal • EQUAL amounts of water inside and outside the cell. Isotonic
Hypotonic more H20 molecules Outside the cell • Hypo-below, under, less • H20 molecules will move IN to the cell. • Cell takes on water Hypotonic Solutions
more H20 inside cell/less H20 molecules outside cell. • Hyper-above, excessive • Cell loses H20 molecules. • Cell dehydrates Hypertonic Solutions