What Is The Difference Between Primary And Secondary Active Transport !!install!! -

A membrane protein acts as a pump. It binds to a molecule on one side of the membrane, breaks an ATP molecule to release energy, changes shape, and releases the molecule on the other side.

A membrane protein (co-transporter) couples the movement of one molecule down its gradient (releasing energy) with the movement of a different molecule against its gradient (using that energy). A membrane protein acts as a pump

Here is the breakdown of the two systems. The Energy Source: It uses energy directly from a chemical reaction, typically the hydrolysis of ATP (adenosine triphosphate). A membrane protein acts as a pump