Question

in simple diffusion, molecules move from an area of __ concentration to an area of __ concentration. multiple choice low, high high; low equal; low low; equal equal; high

Explanation:

In simple diffusion, molecules move down their concentration gradient, which means they move from an area where their concentration is high to an area where their concentration is low, until equilibrium is reached. So the correct pair is high concentration to low concentration.

Answer:

B. high; low