Enzymes are catalysts produced by living things:
A catalyst is a substance which increases the speed of a reaction without being changed or used up in the reaction.
Enzymes reduce the need for high temperatures and we only have enzymes to speed up the useful chemical reactions in the body. These reactions are called metabolic reactions.
Enzymes are all proteins and all proteins are made up of chains of amino acids. These chains are folded into unique shapes, which enzymes need…