Choose the stages where substrate-level phosphorylation occurs in cellular respiration.I GlycolysisII Krebs cycleIII Pyruvate oxidation*1 pointI and II onlyI and III onlyII and III onlyI, II and III
Question
Choose the stages where substrate-level phosphorylation occurs in cellular respiration.I GlycolysisII Krebs cycleIII Pyruvate oxidation*1 pointI and II onlyI and III onlyII and III onlyI, II and III
Solution
Substrate-level phosphorylation occurs in both the Glycolysis stage and the Krebs cycle stage of cellular respiration. It does not occur in the Pyruvate oxidation stage. Therefore, the correct answer is "I and II only".
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