No, they are simple storage molecules.
glycogen granules
No, they do not. Only animal cells have glycogen granule to store energy.
Cell CytoplasmThe cell cytoplasm contains various other substances and structures, including stored foods (glycogen granules and lipid droplets), pigment granules, crystals of various types, water vacuoles, and ingested foreign materials.Human A&P Lab. Manual -9th edition [cat version] Mariebpg. 44
The major storage form of energy in animals is glycogen ,it is stored in glycogen granule . Therefore glycogen granules in muscle cell act as stores of energy , since muscle cells requires alot of energy to perform their functions.
Inclusion bodies
Our bodies way of storing carbohydrates.
Glycogen is the long-term energy storage for animals and most of an animals energy is exerted through motility or muscle movement so it would only make sense for glycogen to be broken down (through hydrolosis) where it was most needed; in the muscles.
Glycogen granules form an energy or food store in mammalian cells. When needed, the glycogen can be broken down (hydrolysed) into glucose, which is used in respiration as a source of energy for the cell. For some background see: http://www.sciencedaily.com/articles/g/glycogen.htm
Glycogen is found in the form of granules in the cytosol in many cell types. ... liver glycogen can be abnormally accumulated or depleted. ...
In humans and animals, most glycogen is stored as granules. when the body needs energy, it breaks down the glycogen granules into energy.
Glycogen
Glycogen is a stored sugar that is made available as the first energy source while exercising. It lasts for about 20 minutes. Then the body uses other sources of metabolism for energy. Glycogen is stored in the liver.