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Transcript
OSMOSIS By: Dillan & Kelsey Osmosis Definition The process by which water molecules defuse across a cell membrane from a area of higher concentration to an area of lower concentration. ex. The absorption of water by plant roots. Direction of Osmosis The net direction of osmosis depends on the relative concentration of solutes on the two sides of the membrane . hypotonic hypertonic isotonic Contractile Vacuoles Organelles that remove water. contractile vacuoles collect the excess water and then contract, pumping the water out of the cell so the cell doesn’t drown. What cells do it? Blood cells Red blood cells White blood cell • the movement of water in and out of the cell membrane. To keep the cells healthy. White blood cells Red blood cell