MDCAT Biology MCQ #471

Before entering the Krebs cycle, pyruvate undergoes oxidative decarboxylation. Which two-carbon molecule is formed and then combined with Coenzyme A?

MDCAT Biology MCQ #471

  1. Question 1

    Q1. Before entering the Krebs cycle, pyruvate undergoes oxidative decarboxylation. Which two-carbon molecule is formed and then combined with Coenzyme A?

    • A) Oxaloacetate
    • B) Citrate
    • C) Acetyl-CoA
    • D) Succinyl-CoA

    Answer: Acetyl-CoA

    Explanation: The link reaction produces Acetyl-CoA and CO2; pyruvate is the reactant, and citrate is the first product of the Krebs cycle.