The type of movement of molecules that is specific and passive,and which becomes saturated if all of the protein carriers are in use is
A)exocytosis.
B)facilitated diffusion.
C)active transport.
D)endocytosis.
E)osmosis.

Question

Quizplus · Accepted Answer

Facilitated diffusion is a specific and passive movement of molecules that requires protein carriers to transport molecules across the cell membrane. Once all available protein carriers are in use, the rate of facilitated diffusion becomes saturated, which means no more molecules can be transported. Exocytosis, active transport, endocytosis, and osmosis are not specific to certain molecules or passive processes.

The Type of Movement of Molecules That Is Specific and Passive,and