The movement of substances from regions where their concentration is higher to regions where their concentration is lower is called
A)active transport.
B)diffusion.
C)pinocytosis.
D)pumping.
E)exocytosis.

Question

Quizplus · Accepted Answer

Diffusion is the movement of substances from regions where their concentration is higher to regions where their concentration is lower. Active transport, pumping, exocytosis, and pinocytosis all involve the movement of substances against their concentration gradient or actively moving substances into or out of a cell.

The Movement of Substances from Regions Where Their Concentration Is