How much ATP does the Krebs cycle produce?
How much ATP does the Krebs cycle produce?
Cite this post:
Sourav Pan. (2025, April 18). How much ATP does the Krebs cycle produce?. Biology Notes Online. Retrieved from https://biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/
Sourav Pan. "How much ATP does the Krebs cycle produce?." Biology Notes Online, 18 April 2025, biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/.
Sourav Pan. "How much ATP does the Krebs cycle produce?." Biology Notes Online (blog). April 18, 2025. https://biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/.
Answered
In one complete turn of the Krebs cycle, 1 molecule of GTP (or ATP) is produced directly through substrate-level phosphorylation. Additionally, the cycle generates 3 NADH and 1 FADH₂, which subsequently donate electrons to the electron transport chain, indirectly producing ATP. 3 NADH yield about 7.5 ATP (3 × 2.5 ATP) and 1 FADH₂ yields about 1.5 ATP. Combined, this results in approximately 10 ATP equivalents per cycle turn. Since two acetyl-CoA molecules are produced from one glucose, total ATP production per glucose via the Krebs cycle is about 20 ATP equivalents.
Cite this post:
Sourav Pan. (2025, April 18). How much ATP does the Krebs cycle produce?. Biology Notes Online. Retrieved from https://biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/
Sourav Pan. "How much ATP does the Krebs cycle produce?." Biology Notes Online, 18 April 2025, biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/.
Sourav Pan. "How much ATP does the Krebs cycle produce?." Biology Notes Online (blog). April 18, 2025. https://biologynotesonline.com/qa/how-much-atp-does-the-krebs-cycle-produce/.
