Question

The number of ATP molecules synthesised depends upon which of the following?

(a) Nature of electron donor

(b) Nature of electron acceptor

(c) Nature of proton donor

(d) Nature of atom

I got this question during a job interview.

This interesting question is from Aerobic Respiration topic in portion Respiration in Plants of Biology – Class 11

Answer 1

Correct answer is (a) Nature of electron donor

To explain: The number of ATP molecules synthesised depends on the nature of the electron donor. Oxidation of one molecule of NADH gives rise to three molecules of ATP, while that of one molecule of FADH2 produces two molecules of ATP.