The scientific term for chemical reactions that occur within living organisms is biochemistry. Biochemistry combines principles of biology and chemistry to study the molecular mechanisms underpinning biological processes. It encompasses the structure and function of biomolecules such as carbohydrates, proteins, lipids, and nucleic acids. Understanding biochemistry is essential for fields like medicine, genetics, and pharmacology. Through biochemistry, scientists can investigate metabolic pathways, enzyme functions, and the biochemical basis of diseases.