<P> Enzymes are known to catalyze more than 5,000 biochemical reaction types . Most enzymes are proteins , although a few are catalytic RNA molecules . The latter are called ribozymes . Enzymes ' specificity comes from their unique three - dimensional structures . </P>
<P> Enzymes are known to catalyze more than 5,000 biochemical reaction types . Most enzymes are proteins , although a few are catalytic RNA molecules . The latter are called ribozymes . Enzymes ' specificity comes from their unique three - dimensional structures . </P>
enzymes are usually composed of which type of molecule
enzymes are usually composed of which type of molecule
proteins
proteins