When does the cell have to use active transport?

a. when the cell has low energy

b. when the cell is in a highly concentrated solution

c. to move molecules across the membrane quickly

d. to move molecules across the membrane against a gradient

Question

12 July, 06:11

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Scarlet Knapp · Answer 1

I believe that a cell must use active transport to move molecules across the membrane against a gradient. Your answer should be D.

When does the cell have to use active transport?a. when the cell has low energyb. when the cell is in a highly concentrated solutionc. to move molecules across the membrane quicklyd. to move molecules across the membrane against a gradient