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Daniel [21]
3 years ago
9

When does the cell have to use active transport?A.when the cell is low on energyB.when the cell is in a highly concentrated solu

tionC.to move molecules across the membrane quicklyD.to move molecules across the membrane against a gradient
Biology
1 answer:
kirza4 [7]3 years ago
7 0
D. To move molecules across the membrane against a gradient.
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