1 Dogs do not need to wait until they are between six months and a year old for spaying or neutering. 2  Most veterinarians recommend having your dog sterilized shortly after the completion of his or her puppy vaccines, around the age of five months. Dogs do not need to wait until they are between six months and a year old for spaying or neutering. 2  Most veterinarians recommend having your dog sterilized shortly after the completion of his or her puppy vaccines, around the age of five months.
alcohol dehydrogenase. (biochemistry). The enzyme that catalyzes the oxidation of ethanol to acetaldehyde.
(See Table 1 for a partial list of enzymes that require NAD + and NADP + .) The redox reaction shown in Figure 2 is catalyzed by the oxidoreductase enzyme alcohol dehydrogenase. In this reaction, two hydrogen atoms and two electrons (the two electrons of the C-H bond) are removed from the ethanol molecule.