Question

Which of the following is correct with respect to ATP synthase?

• A. It is an active transport pump.
• B. It is a facilitated diffusion channel.
• C. It is a passive transport channel.
• D. Both b and c are correct.

Answer 1

The correct option is D Both b and c are correct.

ATP synthase is a protein that forms transmembrane channels. It allows facilitated diffusion of protons which results in generation of ATP. Facilitated diffucion is a method of passive transport which involves movement of molecules from its higher concentration to lower concentration.
ATP synthase is not an active transport pump and so does not allow movement of molecules from its lower concentration to higher concentration.