Pyruvate Oxidation & CO₂ Release — NEET Biology
📚 Practice Concept• The complete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving three molecules of CO2.
Which of the following statements are NOT correct regarding the products and associated events of one complete turn of the TCA cycle? S1: One turn of the TCA cycle produces 3 NADH + H+, 1 FADH2, and 1 ATP (or GTP). S2: The two carbon dioxide molecules released during one turn of the TCA cycle originate from the direct breakdown of the 2-carbon acetyl CoA molecule. S3: The continuous oxidation of acetyl CoA through the TCA cycle depends on the regeneration of NAD+ and FAD+. S4: The immediate product of the condensation of acetyl CoA with oxaloacetic acid is succinyl-CoA. S5: A total of 6 carbon atoms from the original glucose molecule are released as CO2 during two turns of the TCA cycle.
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