A. most of the free energy available from the oxidation of glucose is used in the production of atp in glycolysis. b. glycolysis is a very inefficient reaction, with much of the energy of glucose released as heat. c. most of the free energy available from the oxidation of glucose remains in pyruvate. d. there is no co2 or water produced as products of glycolysis. e. glycolysis consists of many enzymatic reactions, each of which extracts some energy from the glucose molecule.