During Reactions Catalyzed by Oxidoreductases an Electron Donor Is

Question

During reactions catalyzed by oxidoreductases an electron donor is
A) oxidized.
B) reduced.
C) synthesized.
D) degraded.
E) unaltered.

Accepted Answer

Oxidoreductases catalyze oxidation-reduction reactions, which involve the transfer of electrons from an electron donor to an electron acceptor. In these reactions, the electron donor is oxidized (loses electrons) and the electron acceptor is reduced (gains electrons). Therefore, during reactions catalyzed by oxidoreductases, the electron donor is oxidized.