Sonal while studying ETS had a doubt, why FADH2 yields only 2 ATP’s whereas NADH yields three ATP’s?

Question

Sonal while studying ETS had a doubt, why FADH2 yields only 2 ATP’s whereas NADH yields three ATP’s?

Sonal while studying ETS had a doubt, why FADH2 yields only 2 ATP’s whereas NADH₂yields three ATP’s? What would be the correct explanation for her doubt?

Share with your friends

Talk Doctor Online in Bissoy App

Salim Ahmed Kawsar · Answer 1 · Feb 05, 2023 15:29:48

1. During ETS, NADH₂ and FADH₂ undergoes oxidation where they are converted to NAD⁺ and FAD⁺ respectively.

2. During this conversion, hydrogen is removed, which latter forms proton and electron. This electron so formed is passed on to different electron carriers. During this transfer of electron, energy is released which is used in ATP synthesis.

3. In case of NADH_2, energy is released at three places hence results into formation of 3 ATPs whereas, in case of FADH₂ energy is released at only two places, hence results into formation of only 2 ATPs.

4. Here, the ATP formation occurs by Chemiosmotic hypothesis.

Sonal while studying ETS had a doubt, why FADH2 yields only 2 ATP’s whereas NADH yields three ATP’s?

1 Answers