Question

what is common to all of the oxidation reactions in the citric acid cycle? multiple choice they all lead to substrate - level phosphorylation of adp to generate atp. they are all decarboxylation reactions. they all lead to the generation of nadh. they are all characterized by a loss of electrons from an organic molecule coupled to the reduction of an electron acceptor.

Explanation:

Oxidation - reduction reactions involve the transfer of electrons. In the citric - acid cycle oxidation reactions, an organic molecule loses electrons (is oxidized) and an electron - acceptor is reduced. Substrate - level phosphorylation is not a common feature of all oxidation reactions in the cycle. Not all oxidation reactions in the cycle are decarboxylation reactions. And not all lead to the generation of NADH (some generate FADH₂).

Answer:

They are all characterized by a loss of electrons from an organic molecule coupled to the reduction of an electron acceptor.