Chloride ions follow the concentration gradient, but require a membrane protein for passage. Which transport method is occurring?
A)Diffusion
B)Active transport
C)Pinocytosis
D)Facilitated diffusion

Question

Quizplus · Accepted Answer

Facilitated diffusion occurs when molecules passively diffuse across a membrane through a protein channel or carrier protein. Chloride ions following their concentration gradient but requiring a membrane protein for passage, fits with facilitated diffusion.

Chloride Ions Follow the Concentration Gradient, but Require a Membrane