Similar term(s): metabolic.
The conversion or breakdown of a substance from one form to another by an
Source: GreenFacts, based on ATSDR
Metabolism is usually divided into two categories:
Catabolic reactions yield energy, an example being the
breakdown of food in cellular respiration.
Anabolic reactions, on the other hand, use this energy to
construct components of cells such as
proteins and nucleic acids.
The chemical reactions of metabolism are organized into
pathways, in which one chemical is transformed
to another by a sequence of enzymes.