MDCAT Biology MCQ #250

In the first step of the Krebs cycle, the acetyl group from Acetyl-CoA is transferred to which four-carbon acceptor molecule?

MDCAT Biology MCQ #250

  1. Question 1

    Q1. In the first step of the Krebs cycle, the acetyl group from Acetyl-CoA is transferred to which four-carbon acceptor molecule?

    • A) Pyruvate
    • B) Oxaloacetate
    • C) Succinate
    • D) Malate

    Answer: Oxaloacetate

    Explanation: Acetyl-CoA (2C) joins with Oxaloacetate (4C) to form Citrate (6C). Pyruvate is the precursor that is converted into Acetyl-CoA first.