________ is (are)necessary for diffusion to take place.

Question

Quizplus · Accepted Answer

A concentration gradient, or a difference in concentration between two areas, is necessary for diffusion to occur. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, and this only happens when there is a concentration gradient to drive the movement. A cell membrane and membrane proteins can facilitate diffusion, but they are not strictly necessary for it to occur. Energy is not required for simple diffusion.

________ Is (Are)necessary for Diffusion to Take Place