The study of chemical processes that occur within and relate to live beings is known as biochemistry or biological chemistry. Biochemistry is a branch of chemistry and biology that can be further broken down into the sciences of structural biology, enzymology, and metabolism. Biochemistry has improved in explaining life processes through these three disciplines over the past few decades of the 20th century. Biochemical methods and research are revealing and developing almost all aspects of the biological sciences. Understanding the chemical underpinnings that allow biological molecules to give rise to the processes that take place within living cells and between cells is the focus of biochemistry. This knowledge is crucial for understanding tissues and organs as well as the structure and function of organisms. The study of the molecular mechanisms underlying biological events is known as molecular biology, and it is closely related to the field of biochemistry.