What Active Transport !free! -

This process directly uses chemical energy (ATP) to move molecules. A classic example is the Sodium-Potassium Pump , which maintains essential ion levels in animal cells by pumping three sodium ions out for every two potassium ions moved in.

Antiport (move opposite directions) – Sodium-calcium exchanger. | what active transport

Moves two different molecules in the same direction simultaneously. This process directly uses chemical energy (ATP) to