Question

In the electron transport chain, each pair of electron transferred from NADH to oxygen releases sufficient energy to produce __________

(a) 3 ATPs

(b) 1 ATP

(c) 2 ATPs

(d) 4 ATPs

The question was posed to me in a national level competition.

This question is from Mitochondrial Structure and Function topic in division Mitochondrial Structure and Function of Cell Biology

Answer 1

Right answer is (a) 3 ATPs

To elaborate: Electron is transported from the reduced cofactor NADH to oxygen by electron transport chain. During the transfer, it releases sufficient energy to drive the formation of approximately 3 ATP molecules.