what compound can be made from glucose and serves as long term energy storage

The compound made from glucose that serves as long-term energy storage is glycogen. Glycogen is a branched polysaccharide composed of glucose residues and is primarily stored in the liver and muscles of animals. It acts as a readily mobilizable energy reserve when the body requires glucose. Glycogen is the main form of glucose storage in animals and fungi, serving for energy storage over longer periods compared to immediate energy sources like ATP.