Active transport is the movement of molecules against a concentration gradient. This process is directly coupled to ATP hydrolysis as an energy source, for example, by the Na⁺/K⁺ pump. Passive processes like diffusion and facilitated diffusion are driven by the gradient itself and do not require ATP directly.
Active transport is the movement of molecules against a concentration gradient. This process is directly coupled to ATP hydrolysis as an energy source, for example, by the Na⁺/K⁺ pump. Passive processes like diffusion and facilitated diffusion are driven by the gradient itself and do not require ATP directly.
