Bioinorganic chemistry is a branch of chemistry that explores the role of inorganic elements and compounds in biological systems. It focuses on understanding how metals, such as iron, copper, and zinc, contribute to the structure and function of biomolecules, including proteins and enzymes. These metal ions are essential for various biological processes, such as oxygen transport and electron transfer. Researchers in bioinorganic chemistry study the interactions between metal ions and biological molecules to uncover their significance in health and disease. This field also investigates the potential of metal-based drugs, like cisplatin, in treating diseases such as cancer, highlighting the importance of inorganic chemistry in medicine.