Source:http://linkedlifedata.com/resource/umls/id/C1524026
GO: The chemical reactions and pathways by which individual cells transform chemical substances. [GOC:go_curators],NCI: The biochemical alteration of substances introduced into the body.,NCI: The sum of all chemical changes that take place in a cell through which energy and basic components are provided for essential processes, including the synthesis of new molecules and the breakdown and removal of others.,NCI: Organic processes in a cell or organism that are necessary to sustain life. Cellular metabolism can be divided into two categories. Anabolism entails the construction of complex organic molecules from simpler precursors, while catabolism involves the breakdown of complex substances into simpler molecules.