MDCAT Biology MCQ #351

In the Krebs cycle, the conversion of succinate to fumarate involves the removal of hydrogen. Which electron carrier is utilized in this step?

MDCAT Biology MCQ #351

  1. Question 1

    Q1. In the Krebs cycle, the conversion of succinate to fumarate involves the removal of hydrogen. Which electron carrier is utilized in this step?

    • A) NAD+
    • B) NADP+
    • C) GDP
    • D) FAD

    Answer: FAD

    Explanation: FAD is the specific coenzyme reduced during the oxidation of succinate to fumarate. NAD+ is wrong because the reaction's energy change is insufficient.