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a: Active transport ~
b: the opposite of osmosis

What: "Active transport is like the opposite of osmosis. Osmosis is the movement of WATER through a semi-permeable membrane from an area of HIGHER to LOWER concentration. This occurs passively without the need for any energy... Active transport, as the name implies, is the movement of substances (not water) from an area of LOWER to HIGHER concentration. This requires the need for energy."

Writer: Not Stated
Where: Reference Link Has Evaporated
Date: Oct 24 2013 7:28 PM

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