Biochemistry General 85a99d6f Which of the following is not an oxidoreductase - A Catalase B Glucokinase C Alcohol dehydrogenase D Peroxidase High-Yield Explanation Ans. is 'b' i.e., Glucokinase Oxidoreductases are oxidases, dehydrogenases, hydroperoxidases (Catalase, peroxidase), oxygenases.Glucokinase is a transferase.