Active transport differs from diffusion in that active transport?

A. is a very fast process
B. allows the movement of substances against the concentration gradient
C. takes place in both light and dark reaction of photosynthesis
D. occurs in both plant and animal tissues

Correct Answer: Option B

B. allows the movement of substances against the concentration gradient

Explanation

Diffusion, as well as osmosis,  depends only on concentration gradient but active transport works against the concentration gradient.