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Delivery of Electrons to the ETC
Grade Level
AP Biology
APB.200 Delivery of Electrons to the ETC
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Which explanation best addresses why FADH2 from succinate oxidation is often shown already associated with the inner mitochondrial membrane?
A
FADH2 is made only in the intermembrane space after oxygen is reduced.
B
FADH2 must diffuse through the cytosol before it can return to mitochondria.
C
The succinate dehydrogenase reaction is linked to Complex II, so FADH2-associated electrons are passed directly into the membrane ETC route.
D
FADH2 is an ATP synthase subunit that rotates in the membrane.
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