ABSTRACT
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Enzymes are special kinds of proteins that consist of long chains of amino acids bound together by peptide bonds. They are found in all living cells, performing speci c functions, i.e., controlling the metabolic processes, converting nutrients into energy, breaking down food materials, etc. For example, the enzymes pepsin, trypsin, and peptidases break down proteins into amino acids, the lipases split fats into glycerol and fatty acids, and the amylases break down starch into simple sugars.
