Diffusion Requires

Question

Diffusion requires:
A)a semipermeable membrane.
B)a concentration gradient.
C)ions.
D)none of the above.

Accepted Answer

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration, which means there must be a concentration gradient. A semipermeable membrane or ions may be involved in certain types of diffusion but they are not required for diffusion to occur in general.