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diffusion

the act of dispersing or diffusing something

facilitated diffusion

movement of specific molecules across cell membranes through protein channels

aquaporins

Water channel proteins that allow water to pass right through them

osmosis

diffusion of water through a selectively permeable membrane

isotonic

equal concentration

hypertonic

when comparing two solutions, the solution with the greater concentration of solutes

hypotonic

(of a solution) having a lower osmotic pressure than a comparison solution

osmotic pressure

pressure that must be applied to prevent osmotic movement across a selectively permeable membrane

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