MDCAT Biology MCQ #251

During aerobic respiration, electrons are passed through a series of carriers. Which cytochrome is the last to pass electrons to molecular oxygen?

MDCAT Biology MCQ #251

  1. Question 1

    Q1. During aerobic respiration, electrons are passed through a series of carriers. Which cytochrome is the last to pass electrons to molecular oxygen?

    • A) Cytochrome a3
    • B) Cytochrome b
    • C) Cytochrome c
    • D) Coenzyme Q

    Answer: Cytochrome a3

    Explanation: Cytochrome a3 is the final carrier that transfers electrons to oxygen. Cytochrome b is the first cytochrome in the respiratory sequence.