MCAT Biochemistry Question 170: Answer and Explanation
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Question: 170
5. The ability to exist in both an oxidized and a reduced state is characteristic of:
- A. adenosine triphosphate (ATP).
- B. electron carriers.
- C. regulatory enzymes.
- D. peptide hormones.
Correct Answer: B
Explanation:
In order to transport electrons, electron carriers like flavoproteins must be able to exist in a stable oxidized state and a stable reduced form. ATP can be dephosphorylated but is generally not oxidized or reduced.