Confidence votes 46.8K. I was born a Catholic and have never wavered in my faith in over 70 years. I had 12 years of Catholic education in my youth-both primary and secondary schools.
The carbohydrate energy storage molecule of animals is glycogen.  Glycogen is a substance deposited in bodily tissues as a store of  carbohydrates.
Storage polysaccharides are a storage form of energy, for example cellulose in plants and glycogen in animals and humans. Structural polysaccharides give structure to plants; examples include cellulose in plants and chitin in the shells of crustaceans.