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Aria H.

asked • 03/11/19

How can dissolved materials be moved from the outside to the inside of a cell when the inside concentration of the material is higher than the outside concentration?

a. Molecules can be moved into a cell against their concentration gradient if that transport is coupled with osmotic transport of water into the cell.

b. Substances can be moved against a concentration gradient by pumps that do work using the energy provided by ATP hydrolysis.

c. Some channels are capable of moving molecules against their concentration gradients via passive transport.

d. A molecule can be transported into a cell, against its concentration gradient, as long as it is transported along its electrochemical gradient.

e. b and d

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