The mechanism of membrane transport that requires an input of energy is
A) passive transport.
B) active transport.
C) facilitated diffusion.
D) passive diffusion.
E) active diffusion.

Question

Quizplus · Accepted Answer

Active transport is the mechanism of membrane transport that requires an input of energy in the form of ATP. This is in contrast to passive transport, which does not require energy input. Facilitated diffusion is a type of passive transport where a substance is transported down its concentration gradient with the help of a carrier protein, and passive diffusion is the movement of small, non-polar molecules down their concentration gradient. Active diffusion is not a recognized term, as diffusion is a type of passive transport.

The Mechanism of Membrane Transport That Requires an Input of Energy