What compound can be made from glucose and serves as long-term energy storage?

The compound that can be made from glucose and serves as long-term energy storage is glycogen. Glycogen is a polysaccharide that is primarily stored in the liver and muscle tissues of animals. It is composed of long chains of glucose units and serves as a readily accessible energy reserve.

When the body needs energy, glycogen can be broken down back into glucose through a process called glycogenolysis. This makes glycogen a crucial energy storage molecule, especially during periods of fasting or intense physical activity. Additionally, plants use a similar storage polysaccharide called starch for long-term energy storage, which is also made up of glucose units.