Movement of a molecule against its concentration gradient always requires ____.
A)cofactors
B)electron transfer chains
C)oxidation
D)energy
E)reduction

Question

Quizplus · Accepted Answer

Movement against the concentration gradient requires energy in the form of ATP or an electrochemical gradient. Cofactors, electron transfer chains, oxidation, reduction do not directly supply the energy necessary for movement against the concentration gradient.

Movement of a Molecule Against Its Concentration Gradient Always Requires