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Similar term(s): metabolic.
Definition:
The conversion or breakdown of a substance from one form to another by an
enzyme.
Source & ©: GreenFacts, based on ATSDR
ATSDR Glossary of
Terms 
More:
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 metabolic pathways, in
which one chemical is transformed to another by a sequence of enzymes.
Source & ©: Wikipedia
Related words: Metabolite
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