Final answer:
The Krebs cycle produces ATP, NADH, and FADH2 for each molecule of pyruvate processed. NADH and FADH2 are vital for generating the bulk of ATP during oxidative phosphorylation in the electron transport chain.
Step-by-step explanation:
The products of the Krebs cycle are critically important for the synthesis of ATP. This cycle starts with the conversion of pyruvate into acetyl CoA, which then enters the Krebs cycle. For each molecule of pyruvate that enters, one molecule of ATP (or GTP) is produced through substrate-level phosphorylation.
However, the main importance lies in the production of NADH and FADH2, which are high-energy electron carriers. These carriers are crucial for the electron transport chain, where the majority of ATP is generated through oxidative phosphorylation. It's important to note that each glucose molecule results in two turns of the Krebs cycle, thus doubling the yield of these crucial energy carriers and ATP.