How does cellular respiration capture additional energy from glucose?
Pyruvate is transported to the mitochondrial matrix, where it is broken down via the Krebs cycle.
1. In the matrix, pyruvate reacts with a molecule of coenzume A (CoA) to produce acetyl-COA, one CO2 and one NADH
2. Each acetyle-COA combines with a molecule of oxalloacetate to produce 6-C citrate, releasing CoA.
3.Citric acid goes through a series of rearrangements in a cycle of reastions called the Krebs cycle.
4. End products of the Krebs cycle (per molecule of pyruvate): two CO2, one ATP, one FADHs, and three NADH; oxaloacetrate is regenerated
5. Final end products of mitochondrial matrix reactions: 6 CO2, 2 ATP, 8 NADH and 2 FADH2