Question

Do carrier proteins require ATP?

Answer 1

Carrier proteins

1. Carrier proteins are involved in active transport as well as in facilitated diffusion.
2. The carrier proteins which are involved in facilitated diffusion do not require ATP (Adenosine triphosphate).
3. Example- GLUT1
4. The carrier proteins which are involved in active transport against the concentration gradient of ions require ATP.
5. Example- sodium-potassium pump, Ca²⁺ ATPase