In ethanol fermentation from glucosse, carbon dioxide is the electron acceptor, and glucose is the electron donor a. write down the electron donor and acceptor half-reactions for ethanol fermentation for one mole electron transfer along with free-energy changes. b. determine the overall fermentation reaction for one mole of glucose and the free-energy change without cell-synthesis reaction. assuming 20% of the electrons in glucose are used for cell synthesis and 80% for energy c. generation (ee 0.80 and eg 0.20), write down the reactions for ra, rd, and rc, and determine the overall reaction stoichiometry for one mole of nh4-n