An alternative mode of entry into the electron transport chain is the oxidation of
A) malate to oxalosuccinate.
B) succinate to fumarate.
C) isocitrate to a-ketoglutarate.
D) a-ketoglutarate to succinyl-CoA.

Question

Quizplus · Accepted Answer

Succinate can be oxidized to fumarate by succinate dehydrogenase, which is also complex II of the electron transport chain. Therefore, succinate can directly enter the electron transport chain.

An Alternative Mode of Entry into the Electron Transport Chain