Which stage of cellular respiration directly follows glycolysis?

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Multiple Choice

Which stage of cellular respiration directly follows glycolysis?

Explanation:
Glycolysis happens in the cytoplasm and split glucose into pyruvate, producing a little ATP and NADH. In the presence of oxygen, those pyruvate molecules are transported into mitochondria and turned into acetyl-CoA, which then feeds the Krebs cycle. The Krebs cycle is the next major stage where acetyl-CoA is oxidized to CO2 while generating more NADH and FADH2 to fuel the final step. Fermentation would only come into play if oxygen isn’t available, allowing glycolysis to continue by regenerating NAD+, but it isn’t the direct next stage in aerobic cellular respiration. The electron transport chain occurs after the Krebs cycle, using the NADH and FADH2 produced earlier.

Glycolysis happens in the cytoplasm and split glucose into pyruvate, producing a little ATP and NADH. In the presence of oxygen, those pyruvate molecules are transported into mitochondria and turned into acetyl-CoA, which then feeds the Krebs cycle. The Krebs cycle is the next major stage where acetyl-CoA is oxidized to CO2 while generating more NADH and FADH2 to fuel the final step. Fermentation would only come into play if oxygen isn’t available, allowing glycolysis to continue by regenerating NAD+, but it isn’t the direct next stage in aerobic cellular respiration. The electron transport chain occurs after the Krebs cycle, using the NADH and FADH2 produced earlier.

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