The method of movement that requires the expenditure of ATP molecules is
A) simple diffusion.
B) facilitated diffusion.
C) osmosis.
D) active transport.
E) bulk flow.

Question

Quizplus · Accepted Answer

Active transport requires the expenditure of ATP molecules to move substances against a concentration gradient or across a membrane. Simple diffusion, facilitated diffusion, osmosis, and bulk flow do not require the expenditure of ATP molecules.

The Method of Movement That Requires the Expenditure of ATP