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.
Carbohydrates serve as storage products of energy. The principal forms are starch in plants and glycogen in animal tissues. These are polymers of glucose; they are deposited in cells in the form of granules when a surplus of glucose is available.