Enzymes make possible chemical reactions that, in normal conditions, will never take place, or would happen after a very long time, too much for living beings.
Enzymes can act rapidly, as in the case of carbonic anhydrase (enzymes typically end in the -ase suffix), which causes the chemicals to react 107 times faster than without the enzyme present.
Carbonic anhydrase speeds up the transfer of carbon dioxide from cells to the blood. There are over 2000 known enzymes, each of which is involved with one specific chemical reaction. Enzymes are substrate specific. The enzyme peptidase (which breaks peptide bonds in proteins) will not work on starch (which is broken down by human-produced amylase in the mouth).
Enzymes are also called as biocatalyst. They catalyze biochemical reactions which occurs in living organism. Enzymes are the substances which catalyze the reactions but do not get consumed.
View more at Exclzyme® EN (60)