The study of chemical processes within and pertaining to live beings is known as biochemistry or biological chemistry. Biochemistry is categorized into three fields: structural biology, enzymology, and metabolism. It is a sub-discipline of both chemistry and biology. Biochemistry has proven successful at understanding life processes through these three disciplines in the later decades of the twentieth century. Biochemical methods and study are being used to explore and develop almost every aspect of the biological sciences. Biochemistry focuses on understanding the chemical base that allows biological molecules to give rise to the activities that occur within live cells and between cells, which has a lot to do with the form and function of tissues and organs. Biochemistry is intimately linked to molecular biology, which is the study of biological phenomena' molecular mechanisms.