The study of the structure and function of biological macromolecules is referred to as biochemistry. This field examines the interactions and roles of critical macromolecules, including proteins, nucleic acids, carbohydrates, and lipids. Biochemistry plays a vital role in understanding cellular processes, metabolic pathways, and the molecular basis of life. It also provides insights into how changes at the molecular level can impact larger biological systems, informing research in areas such as human health, pharmacology, and biotechnology.