An Overview of Metabolism and Biochemical Energy ATP,the final result of food catabolism,has been called the 'energy currency"of the cell Energy production and use in living organisms revolve around the ATPs ADP interconversion Catabolic reactions "buy"ATP with energy released by synthesizing it from ADP plus hydrogen phosphate ion Anabolic reactions "spend"ATP by transferring a phosphate group to another molecule,thereby regenerating ADP NH2 NH2 Diphosphate Triphosphate HOPO32,H* CH2 -H20 OH OH OHOH Adenosine diphosphate(ADP) Adenosine triphosphate(ATP) Cangage Learing.All Rights Resarved. ATP, the final result of food catabolism, has been called the “energy currency” of the cell ▪ Energy production and use in living organisms revolve around the ATP ⇆ ADP interconversion ▪ Catabolic reactions “buy” ATP with energy released by synthesizing it from ADP plus hydrogen phosphate ion ▪ Anabolic reactions “spend” ATP by transferring a phosphate group to another molecule, thereby regenerating ADP An Overview of Metabolism and Biochemical Energy