Primary active transport is a type of active transport that involves the direct use of energy from ATP to transport molecules across a cell membrane against a concentration gradient. This process requires the use of a transport protein, also known as a pump, which uses the energy from ATP hydrolysis to move molecules against their concentration gradient.
The sodium-potassium pump is essential for maintaining the resting potential of neurons and muscle cells, and for regulating the balance of fluids and electrolytes in the body. primary active transport example
By pumping ions, cells prevent themselves from swelling and bursting. Primary active transport is a type of active