catalysts that help to carry out the thousands of chemical reactions that
Enzymes are biological proteins made up of several hundred amino acids
occur in living cells. They are generally large In an enzyme-catalyzed reaction, the substance to be reacted, the substrate, binds to the active site of
the enzyme. The enzyme then converts the substrate to products. Finally, the products are released
solution and the enzyme ready to help with another reaction. As is true of any catalyst, the
enzyme is not used up as it carries out the but is recycled again and again. One enzyme
reaction molecule can carry out thousands of reaction cycles every minutell