Question

A substance that moves across a cell membrane without using the cell’s energy tends to move___________. a away from the area where it is less concentrated b toward the area where it is more concentrated c away from the area where it is more concentrated d away from the area of equilibrium

Answer 1

A substance that moves across a cell membrane without using the cell’s energy tends to move **c. away from the area where it is more concentrated**. This process is known as passive transport, where molecules move down their concentration gradient—from areas of higher concentration to areas of lower concentration—until equilibrium is reached.