MDCAT Biology MCQ #268

During a single turn of the Krebs cycle, how many molecules of carbon dioxide are released as metabolic waste products?

MDCAT Biology MCQ #268

  1. Question 1

    Q1. During a single turn of the Krebs cycle, how many molecules of carbon dioxide are released as metabolic waste products?

    • A) One molecule
    • B) Two molecules
    • C) Three molecules
    • D) Four molecules

    Answer: Two molecules

    Explanation: Two CO2 molecules are released per Acetyl-CoA; four are released per glucose. Students often confuse the per-turn vs per-glucose values.