The core component of living organisms is carbon, which forms the backbone of complex organic molecules, such as proteins, nucleic acids, lipids, and carbohydrates. These macromolecules are essential for life, playing critical roles in structure, function, and energy storage. Carbon's unique ability to form stable covalent bonds with different elements enables the vast diversity of organic compounds, facilitating various biological processes and interactions. As a result, it plays a fundamental role in biochemistry and the maintenance of life.