Question

Choose the correct answer from the alternatives given.
Active transport from outside to inside of molecules across a membrane requires:

• A. cyclic AMP
• B. acetyl chlorine
• C. ATP
• D. lecithin

Answer 1

The correct option is C ATP

Active transport, which is the movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration, requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP. So, the correct option is 'ATP'.