The movement of molecules against their concentration gradient is called

Question

Quizplus · Accepted Answer

Active transport is the movement of molecules against their concentration gradient, which requires the expenditure of energy (usually in the form of ATP). Facilitated diffusion and diffusion both occur down the concentration gradient, while endocytosis and osmosis refer to different mechanisms for the transport of large molecules or water across membranes, respectively.

The Movement of Molecules Against Their Concentration Gradient Is Called