How many ATP molecules are produced during th | vedclass

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Question

(B) During the Krebs cycle ($TCA$ cycle),the enzyme succinate dehydrogenase catalyzes the oxidation of succinate to fumarate.In this reaction,$FAD$ is

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(B) During the Krebs cycle ($TCA$ cycle),the enzyme succinate dehydrogenase catalyzes the oxidation of succinate to fumarate.In this reaction,$FAD$ is reduced to $FADH_2$.One molecule of $FADH_2$ enters the electron transport chain $(ETC)$ and yields $2\ ATP$ molecules via oxidative phosphorylation.However,the question specifically asks for the $ATP$ produced directly or via the electron transport chain resulting from this specific step.Since $FADH_2$ is the direct product of this reaction,and it is equivalent to $2\ ATP$ in the energy yield,the correct answer is $2\ ATP$.

How many $ATP$ molecules are produced during the oxidation of succinate to fumarate (in $ATP$)?

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