Question

during which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid? electron transport chain glycolysis krebs cycle acetyl coa formation

Explanation:

Glycolysis is the first stage of cellular respiration where one molecule of glucose is broken down into two molecules of pyruvic acid. The electron - transport chain is involved in generating ATP using the energy from electron carriers. The Krebs cycle oxidizes acetyl - CoA to produce energy - rich molecules. Acetyl - CoA formation is the step between glycolysis and the Krebs cycle where pyruvate is converted to acetyl - CoA.

Answer:

B. glycolysis