Energy and Metabolism

ID #1770

The Krebs cycle has O2 present. Since the Krebs cycle is the second part of the Glycolysis-aerobic cycle, is the Krebs cycle aerobic?


The Krebs cycle itself does not use molecular oxygen, so technically speaking, the Krebs cycle is an anaerobic process. But the Krebs cycle will not keep going in the absence of the ETC (whereas glycolysis will), so we group pyruvate oxidation, Krebs cycle, the ETC, and oxidative phosphorylation together into the category of aerobic respiration.

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