What class of biomolecule is glycogen?

Glycogen is classified as a carbohydrate. It is a polysaccharide composed of long chains of glucose molecules linked together. This structure allows glycogen to serve as an important energy storage form in animals, primarily found in the liver and muscles. When the body requires energy, glycogen can be broken down into glucose units and released into the bloodstream to be utilized for energy production.

While proteins, lipids, and nucleic acids represent other classes of biomolecules, they serve different functions. Proteins are made from amino acids and are essential for a variety of biological functions, including structure and catalysis. Lipids, which include fats, oils, and phospholipids, primarily serve as energy storage and make up cell membranes. Nucleic acids, such as DNA and RNA, are crucial for the storage and transmission of genetic information. Thus, the classification of glycogen as a carbohydrate reflects its specific structure and role in biological systems.