Under what condition will diffusion take place most rapidly?

Question

a
movement from an area of low concentration to high concentration
b
movement from an area of high concentration to an area of low concentration
c
movement against a concentration gradient
d
movement through a permanent barrier

Answer 1

Diffusion will take place most rapidly under the condition described in:

b: movement from an area of high concentration to an area of low concentration.

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration, driven by the concentration gradient. This process continues until equilibrium is reached.