Question

multiple choice question
during diffusion, molecules move from an area of ____ concentration to an area of ____ concentration.

higher; lower

lower; higher

Explanation:

Diffusion is the process by which molecules move from a region of higher concentration to a region of lower concentration. This is because molecules tend to spread out to achieve equilibrium, moving down their concentration gradient. So the correct pair is higher to lower.

Answer:

A. higher; lower