Geographic Concepts. The Census Bureauâs urban-rural classification is fundamentally a delineation of geographical areas, identifying both individual urban areas and the rural areas of the nation.
Glycogen is a polysaccharide molecule stored in animal cells along with water and used as a source of energy. When broken down in the body, it is transformed into glucose, an important source of energy for animals. In animals, it plays a role similar to that played by starch in plants.
Glycogen is the storage form of glucose, the source of human energy derived from carbohydrates consumed through food. To assist in the storage process, molecules of glucose, a sugar composed of carbon, oxygen, and hydrogen atoms, are strung together to form glycogen, a complex molecule known as a polysaccharide.he skeletal muscles and the liver are the two chief storage facilities for glycogen. Approximately 1% of muscle mass is glycogen; between 8% and 10% of the liver's weight is stored glycogen. The skeletal muscles store two times as much glycogen as does the liver.