Final answer:
The four classes of organic molecules are carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates provide energy for the cell and structural support, while lipids serve as a long-term energy storage and are important for cell structure. Proteins have various functions in the body, and nucleic acids are involved in storing and transmitting genetic information.
Step-by-step explanation:
The four classes of organic molecules are carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are a group of macromolecules that provide energy for the cell and structural support to certain organisms. Examples of carbohydrates include glucose and starch. Lipids are another class of organic molecules that serve as a long-term energy storage and are also important for cell structure. Examples of lipids include fatty acids and cholesterol. Proteins are macromolecules that have various functions in the body, such as providing structural support, facilitating chemical reactions, and transporting molecules. Examples of proteins include antibodies and enzymes. Nucleic acids are involved in storing and transmitting genetic information. Examples of nucleic acids include DNA and RNA.