Answer:
carbohydrates, lipids, proteins, and nucleic acids.
Explanation:
Carbohydrates are the primary source of energy. Some are structural, such as cellulose.
Proteins have a wide variety of functions. They make up structures, and regulate chemical reactions as enzymes.
Nucleic acids, DNA and RNA, are involved in heredity and the production of proteins.
Lipids can be structural, such as the phospholipids in the plasma membrane, and they are a source of energy.
