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Passive membrane transport processes include ________.

A) movement of a substance down its concentration gradient
B) movement of water from a low concentration to an area of high concentration
C) movement of a substance up its concentration gradient
D) consumption of ATP

Marked as best answer by Ferrow

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B) Water moves from areas of low solute concentration to areas of high solute concentration.
C) When substances move up their concentration gradients, the cell provides energy; this is active transport.
D) Whenever a cell uses ATP, this is active transport. Passive processes do not require ATP.

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Saved me massive time.

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