Question Detail

BIO 101 BIO 101 Past Questions Objective Question
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Question

In mitochondria, which complex does not pump protons?
Options
A Complex I
B Complex III
C Complex II
Correct Answer
D Complex IV
Correct Answer

Option C is the correct answer.

Detailed Explanation

Complex II (succinate dehydrogenase) transfers electrons from FADH2 to ubiquinone but does not span the inner membrane in a way that allows it to pump protons. Complexes I, III, and IV are proton pumps.

Hint

This complex is also part of the Krebs cycle.

Question Info

Course: BIO 101
Topic: BIO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 785 of 2556
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