Energy and Metabolism

ID #1771

Is Glycolysis anaerobic since it does not have O2, while Krebs cycle and ETC are aerobic since they have O2, while fermentation is anaerobic since it does not have O2?


Glycolysis is the prelude to both aerobic AND anaerobic respiration, even though glycolysis itself doesn't use molecular oxygen. Krebs cycle is part of aerobic respiration because of its close ties with the ETC, even though Krebs cycle itself doesn't use molecular oxygen. But yes, the ETC is not only part of aerobic respiration, it is dependent on molecular oxygen. And yes, fermentation is anaerobic respiration that follows glycolysis.

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