Glycogen is an energy-storage molecule in humans. A hormone that is called insulin controls the storage of glycogen in the liver. Insulin is made up of amino acids. Which statement correctly identifies the types of macromolecules that are described? A.)Glycogen is a protein, and insulin is a lipid. B.)Glycogen is a lipid, and insulin is a protein. C.)Glycogen is a carbohydrate, and insulin is a lipid. D.)Glycogen is a carbohydrate, and insulin is a protein.
I believe the answer is D!