Facilitated diffusion
A) can be an active or passive process.
B) can be via transmembrane protein channels or carriers.
C) is usually against electrochemical gradients.
D) is always against the concentration gradient.
E) is generally faster via carrier than channel.

Question

Quizplus · Accepted Answer

Facilitated diffusion involves the movement of molecules across cell membranes through transmembrane protein channels or carriers, but it does not require energy as it moves substances down their concentration gradient.

Facilitated Diffusion