Final answer:
The citric acid cycle involves a series of reactions that convert Acetyl-CoA into energy-rich molecules like NADH and CO₂. The cycle runs continuously and is regulated by feedback mechanisms.
Step-by-step explanation:
- Acetyl-CoA combines with oxaloacetate to form citrate.
- Citrate is converted into isocitrate.
- Isocitrate is then oxidized to a-ketoglutarate, releasing CO₂ and producing NADH.
Acetyl-CoA is the starting molecule, which goes through a series of reactions to produce energy-rich molecules like NADH and CO₂. The cycle runs continuously as long as there are sufficient reactants. The rate of the cycle is regulated by negative feedback from ATP and NADH, and positive feedback from ADP.