Biochemistry is the study of the chemical processes and substances that occur within living organisms. It combines the principles of both biology and chemistry to explore the molecular basis of life. Biochemists seek to understand the structure and function of the chemicals that make up living systems, such as proteins, carbohydrates, lipids, and nucleic acids, and how they interact with each other.

Biochemistry is used in many fields of science, including genetics, medicine, and agriculture. For example, biochemists study how genes are expressed and how mutations can cause disease, develop new drugs to target specific biochemical pathways, and create genetically modified organisms to improve crop yields. Understanding biochemistry is crucial to understanding the fundamental processes that maintain life, and to developing new technologies to improve human health and quality of life.