number of ATP produced in Krebs cycle
Understand the Problem
The question is asking for the number of ATP molecules produced during the Krebs cycle, which is a key part of cellular respiration. The Krebs cycle (or citric acid cycle) converts acetyl-CoA to energy-carrying molecules including ATP.
Answer
10 ATP per cycle.
A single turn of the Krebs cycle directly produces 1 ATP/GTP, while oxidative phosphorylation from NADH and FADH2 generated in the Krebs cycle produces additional ATP molecules, totaling around 10 ATP per cycle.
Answer for screen readers
A single turn of the Krebs cycle directly produces 1 ATP/GTP, while oxidative phosphorylation from NADH and FADH2 generated in the Krebs cycle produces additional ATP molecules, totaling around 10 ATP per cycle.
More Information
Each turn of the Krebs cycle produces 3 NADH, 1 FADH2, and 1 GTP/ATP. The NADH and FADH2 result in additional ATP through oxidative phosphorylation.
Tips
A common mistake is confusing the direct ATP produced in the Krebs cycle with the ATP generated through oxidative phosphorylation.
Sources
- The number of ATP molecules produced from one Krebs cycle - toppr.com
- Citric acid cycle - Wikipedia - en.wikipedia.org
- 18.3C: Citric Acid (Krebs) Cycle - Biology LibreTexts - bio.libretexts.org
