Organic compounds are a broad class of chemical structures characterized primarily by the presence of carbon-carbon bonds, making them fundamental to biology and biochemistry. These compounds encompass a vast array of molecules, including hydrocarbons, alcohols, carboxylic acids, and nitrogenous bases. They form the structural backbone of life, constituting essential biological macromolecules such as proteins, nucleic acids, and complex carbohydrates. The unique bonding capacity of carbon allows for the formation of intricate molecular geometries, enabling the diverse chemical properties necessary for cellular function and biological processes.