In which stage(s) of cellular respiration is acetyl CoA a reactant?Group of answer choicespyruvate oxidationcitric acid cycleglycolysisoxidative phosphorylation
Question
In which stage(s) of cellular respiration is acetyl CoA a reactant?Group of answer choicespyruvate oxidationcitric acid cycleglycolysisoxidative phosphorylation
Solution
Acetyl CoA is a reactant in two stages of cellular respiration: pyruvate oxidation and the citric acid cycle.
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Pyruvate Oxidation: This is the step that bridges glycolysis and the citric acid cycle. In this stage, each pyruvate molecule from glycolysis is converted into Acetyl CoA.
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Citric Acid Cycle (also known as Krebs Cycle or TCA Cycle): In this stage, each Acetyl CoA produced from pyruvate oxidation enters the cycle and is further broken down to produce energy in the form of ATP, NADH, and FADH2.
Acetyl CoA is not a reactant in glycolysis or oxidative phosphorylation.
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