MDCAT Biology MCQ #547

During the oxidation of pyruvate, it is converted into Acetyl-CoA. What is the most significant structural change between these two molecules?

MDCAT Biology MCQ #547

  1. Question 1

    Q1. During the oxidation of pyruvate, it is converted into Acetyl-CoA. What is the most significant structural change between these two molecules?

    • A) The number of carbon atoms in the molecule
    • B) The presence of a carboxyl group in the structure
    • C) The ability to enter the mitochondrial matrix
    • D) The state of oxidation relative to glucose

    Answer: The number of carbon atoms in the molecule

    Explanation: Pyruvate is a 3-carbon molecule, while Acetyl-CoA is a 2-carbon molecule; both are intermediates in aerobic respiration.