Here's how it works:
* ATP is the cell's primary energy currency. It stores chemical energy in its phosphate bonds.
* The sodium-potassium pump uses ATP hydrolysis to power its action. This means it breaks down ATP into ADP (adenosine diphosphate) and a free phosphate group, releasing energy in the process.
* The energy from ATP hydrolysis is used to move sodium ions out of the cell and potassium ions into the cell, against their concentration gradients. This creates and maintains the electrochemical gradients that are essential for various cellular processes, such as nerve impulse transmission and muscle contraction.
In short, the sodium-potassium pump is an active transport system that requires energy to function, and this energy is supplied by the breakdown of ATP.
