__hot__ - Does Active Transport Need Atp

The primary reason active transport requires is that it involves moving solutes against a concentration gradient . In nature, molecules tend to move from areas of high concentration to areas of low concentration (diffusion). To reverse this "downhill" flow and push molecules "uphill," the cell must perform work .

To understand why energy is needed, it helps to understand when energy is not needed. does active transport need atp

However, the source of that energy can vary. While ATP is the most common and widely recognized energy currency, it is not the only one. The primary reason active transport requires is that