Flow of ions through the small pores in the cell membrane called ion channels is an example of what mode of transport?

Question

Quizplus · Accepted Answer

Ion channels allow the flow of specific ions down their concentration gradient, which is an example of facilitated diffusion, where a membrane protein assists the movement of a substance across the membrane. Simple diffusion does not involve any membrane proteins, while primary and secondary active transport involve the use of ATP or a cotransported ion, respectively.

Flow of Ions Through the Small Pores in the Cell