Question

The TCA cycle produces ___________

(a) 2 GTPs

(b) 1 GTP

(c) 3 GTPs

(d) 4 GTPs

The question was asked during an internship interview.

My question comes from Mitochondrial Structure and Function topic in chapter Mitochondrial Structure and Function of Cell Biology

Answer 1

The correct choice is (a) 2 GTPs

To explain I would say: The primary products of the TCA cycle pathway are the reduced coenzymes, NADH and FADH2, which contain high energy electrons removed from various substrates as they are oxidized. The Krebs’ cycle produces two GTP molecules during one cycle. 2 GTP molecules equivalents to 2 ATP molecules.