Textbook Question
Match the following ATP yields to reactions a to g:
1.5 ATP 2.5 ATP 7 ATP 10 ATP
12 ATP 32 ATP 36 ATP
f. NADH + H+ is oxidized to NAD+.
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21. The Generation of Biochemical Energy
Oxidative Phosphorylation
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
All of the following pump H+ ions across the inner membrane of mitochondria except:
A
Complex I
B
Complex II
C
Complex III
D
Complex IV
E
Complex V
Verified step by step guidance1
Understand the role of the electron transport chain in mitochondria, which involves complexes I, II, III, IV, and V.
Recognize that complexes I, III, and IV are involved in pumping H+ ions across the inner mitochondrial membrane, contributing to the proton gradient used for ATP synthesis.
Complex II is part of the electron transport chain but does not pump H+ ions across the membrane. It transfers electrons from FADH2 to ubiquinone.
Complex V, also known as ATP synthase, uses the proton gradient created by the other complexes to synthesize ATP but does not pump H+ ions itself.
Identify that the exception in the list is Complex II, which does not contribute to the proton gradient by pumping H+ ions.
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