Final answer:
During the Electron Transport Chain (ETC), each NADH typically produces three ATP molecules, whereas FADH2 produces only two ATPs each. This is because the electrons from NADH enter at a higher energy state compared to those from FADH2. The total ATP produced by NADH during the ETC is a significant part of the overall energy yield from aerobic respiration.
Step-by-step explanation:
ATP Production from NADH During the ETC
The Electron Transport Chain (ETC) is a crucial stage in cellular respiration where most of the ATP is generated. Each NADH molecule that enters the ETC typically produces three ATPs. This is because NADH donates electrons to Complex I, initiating a series of reactions that ultimately lead to the production of ATP through oxidative phosphorylation. As for FADH2, the molecules produce approximately two ATPs each, as they donate electrons to complex II, starting at a lower point in the ETC than NADH.
During aerobic respiration, each glucose molecule produces a certain amount of NADH and FADH2, which then feed into the ETC. It is important to note that other factors, such as the transport of NADH from the cytoplasm into the mitochondria, can affect the total ATP yield. In summary, the NADH produced in the mitochondria contributes significantly to the total ATP generated, with each NADH producing three ATPs during the electron transport stage.