MDCAT Biology MCQ #395

In the electron transport chain, which cytochrome is the final carrier that transfers electrons to the terminal electron acceptor, oxygen?

MDCAT Biology MCQ #395

  1. Question 1

    Q1. In the electron transport chain, which cytochrome is the final carrier that transfers electrons to the terminal electron acceptor, oxygen?

    • A) Cytochrome b
    • B) Cytochrome c
    • C) Cytochrome c1
    • D) Cytochrome a3

    Answer: Cytochrome a3

    Explanation: Cytochrome a3 is the terminal oxidase that reduces oxygen to water; Cytochrome c is a mobile carrier between complexes.