What is diffusion?
A) one type of active transport
B) the movement of water across a cell membrane
C) the movement of molecules from an area of high concentration to an area of low concentration
D) the movement of molecules across a membrane, assisted by proteins embedded in the membrane

Question

Quizplus · Accepted Answer

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration down their concentration gradient. This process does not require energy or assistance from proteins, and it can occur across a membrane or through a solution.

What Is Diffusion