The electrons formed from the aerobic oxidation of glucose are
(I) ultimately transferred to O₂ after several other transfer reactions.
(II) transferred to the coenzymes NAD⁺ and FAD.
(III) directly transferred to O₂ during the citric acid cycle.
(IV) transferred to succinate and arachidonic acid.

Question

Quizplus · Accepted Answer

Electrons formed from the aerobic oxidation of glucose are transferred to coenzymes NAD+ and FAD, and then ultimately transferred to O2 after several other transfer reactions. This process of electron transfer is known as the electron transport chain. During the citric acid cycle, the electrons are not directly transferred to O2 but are instead transferred to NAD+ and FAD, which are then used in the electron transport chain. Therefore, choices (II) and (III) are both correct. Choice (IV) is incorrect as electrons are not transferred to succinate or arachidonic acid during aerobic respiration.

The Electrons Formed from the Aerobic Oxidation of Glucose Are