Final answer:
Carbohydrates, lipids, proteins, and nucleic acids are different types of biological macromolecules with distinct functions. Carbohydrates provide energy, lipids serve as the body's main source of energy, proteins are made up of amino acids, and nucleic acids store and transmit genetic information.
Step-by-step explanation:
Carbohydrates, lipids, proteins, and nucleic acids are four major classes of biological macromolecules that play important roles in cells. Carbohydrates are the primary source of energy, while lipids serve as the body's main source of energy. Proteins are made up of amino acids, not nucleotides, and nucleic acids store and transmit genetic information.