Enzymes are a type of protein that exist in all living organisms. They are catalysts, meaning they are able to speed up chemical reactions and do not participate in the reaction themselves. Among others, temperature and acidity activate the chemical reaction of an enzyme.
Enzymes can simply be defined as proteins that act as catalyst for various kinds of biochemical reactions without themselves undergoing any kind of change. They enhance the rate of chemical reaction, which otherwise would take place very slowly. Enzymes are produced in the bodies of all living organisms including plants, animals, microorganisms, and human beings and hold the key responsibility for many critical biochemical reactions. Enzymes are unique since they are not alive yet still accelerate the rate of chemical reactions. They are composed of amino acids and are biodegradable protein molecules, whose presence in lives has made things quite simple and easy. Enzymes play an important role in human lives.