In order to be able to continue, each turn of the Krebs cycle must regenerate:

Question

Quizplus · Accepted Answer

Citrate is the molecule that is continuously regenerated in the Krebs cycle. Acetyl CoA enters the cycle and combines with oxaloacetate to form citrate. Through a series of enzyme-catalyzed reactions, citrate is eventually broken down into oxaloacetate, which can then combine with another acetyl CoA molecule to continue the cycle. The cycle also produces NADH and FADH2, which are important for the electron transport chain and the production of ATP, but these molecules are not regenerated within the Krebs cycle itself. Pyruvate is not involved in the Krebs cycle at all. ATP is produced through oxidative phosphorylation, which occurs after the Krebs cycle.

In Order to Be Able to Continue, Each Turn of the Krebs