Enzymes are biological polymers that catalyze biochemical reactions. The human body comprises several types of cells, tissues, and organs. To maintain a healthy existence, our bodies release substances to accelerate biological functions such as breathing, digestion, excretion, and a few other metabolic operations. As a result, enzymes are essential in all living beings since they regulate all biological processes. The bulk of enzymes are proteins with catalytic properties required to complete various operations. A group of enzymes required to support life perform the cell’s metabolic processes and other chemical reactions. The first stage of the metabolic process depends on enzymes, which react with a substance known as the substrate. Enzymes degrade substrates into other unique molecules known as products. Because of their importance in supporting life processes, enzyme control has been a critical component in clinical diagnosis. Except for ribozymes, which are RNA catalysts, all enzymes’ macromolecular components are proteins. The term ribozyme is derived from the enzyme ribonucleic acid. Many ribozymes are ribonucleic acid molecules that catalyze processes in their own bonds or among other RNAs. Enzymes can be found in all body tissues and fluids. Intracellular enzymes catalyze all reactions that take place in metabolic pathways. Enzymes in the plasma membrane control catalysis in cells in response to cellular signals, and enzymes in the circulatory system control blood coagulation. The majority of vital life processes rely on enzyme activity.