Final answer:
The Krebs cycle produces CO₂, ATP (or GTP), NADH, and FADH₂ for each acetyl CoA that enters the cycle, with ATP being generated through substrate-level phosphorylation and NADH and FADH₂ serving as essential electron carriers.
Step-by-step explanation:
The products of the Krebs cycle, also known as the citric acid cycle, include CO₂, ATP (or GTP), NADH, and FADH₂. Each turn of the Krebs cycle results in the production of high-energy molecules that are essential for cellular metabolism. Specifically, for each acetyl CoA molecule that enters the cycle, one molecule of ATP (or GTP, depending on the cell type) is produced through substrate-level phosphorylation.
Furthermore, three molecules of NADH and one molecule of FADH₂ are generated. These high-energy electron carriers, NADH and FADH₂, play critical roles in the electron transport chain, where the bulk of ATP production occurs during aerobic respiration. In addition, two CO₂ molecules are released as byproducts per turn of the cycle.