Final answer:
During the Krebs cycle, substrate-level phosphorylation occurs, resulting in the production of ATP. The cycle generates three NADH, one FADH₂, and one ATP molecule for each acetyl CoA molecule that enters the cycle.
Step-by-step explanation:
The type of phosphorylation that occurs during the Krebs cycle is substrate-level phosphorylation. Substrate-level phosphorylation is the process by which a phosphate group is directly transferred from a reactive intermediate to ADP, forming ATP. In the Krebs cycle, one ATP molecule is produced by substrate-level phosphorylation for each round of the cycle.
During the Krebs cycle, a two-carbon acetyl CoA molecule is generated from each pyruvate produced in glycolysis. This acetyl CoA molecule enters the cycle and undergoes a series of reactions, resulting in the production of three NADH, one FADH₂, and one ATP molecule through substrate-level phosphorylation. Additionally, two CO₂ molecules are released during the process.