When molecules move through a cell membrane from an area of greater concentration to an area of lesser concentration by way of a channel protein,it is called:
A)osmosis
B)endocytosis
C)facilitated diffusion
D)exocytosis

Question

Quizplus · Accepted Answer

The process described is facilitated diffusion, which involves the movement of molecules across a membrane from an area of high concentration to an area of lower concentration through a protein channel. Osmosis involves the movement of water molecules across a membrane from an area of high concentration to an area of lower concentration. Endocytosis and exocytosis involve the movement of larger molecules into or out of a cell by engulfing the material in a vesicle.

When Molecules Move Through a Cell Membrane from an Area