Processes involved in the movement of substances across a membrane at the expense of ATP are classified as
A)osmosis.
B)diffusion.
C)filtration.
D)facilitated diffusion.
E)active transport.

Question

Quizplus · Accepted Answer

The process of active transport involves the movement of substances across a membrane at the expense of ATP. Osmosis, diffusion, and facilitated diffusion are all passive transport processes that do not require ATP. Filtration is also a passive process but involves the movement of substances through a membrane due to pressure gradients.

Processes Involved in the Movement of Substances Across a Membrane