What are the 4 classes of organic matter in the body?

The four classes of organic matter in the body are carbohydrates, lipids (fats), proteins, and nucleic acids. These compounds play essential roles in various biological processes and are key components of cells, tissues, and organs in the body. Each class of organic matter serves unique functions, such as energy storage (carbohydrates and lipids), structural support (proteins), and genetic information storage (nucleic acids).