During the process of digestion, fats are broken down when fatty acids are detached from glycerol. in addition, proteins are digested to yield amino acids. what do these two processes have in common? both a involve the addition of a water molecule to break bonds. b are catalyzed by the same enzyme. c require the presence of hydrochloric acid to lower the ph. d occur intracellularly in most organisms. e require atp as an energy source.