Answer:
The statements are not given so we'll just differentiate these 3 polysaccharides:
Glycogen and Starch
For starch and glycogen, they are known as storage polysaccharides for plants and animals, respectively. They are similar in terms of the glucose bonds used in the initial arrangement. The glucose isomer has a hydroxyl (-OH) group attached to C1. Amylose and amylopectin are present in glycogen and starch. In contrast, glycogen contains more amylopectin with frequent branching than starch.
Amylose
The monomers of glucose are linked by 1,4 glycosidic bonds. These links produce an unbranched polysaccharide which transforms into a helix.
Amylopectin
The 2 types of glycosidic bonds in amylopectin are 1,4 and 1,6 glycosidic bonds. Due to the presence of the two bonds, it's now considered as a branched polysaccharide. Glycogen contains more of amylopectin compared to starch.
Chitin
Chitin is also a polysaccharide made from glucose. It is seen usually in the cell walls of fungi and hard exoskeletons of insects and crustaceans. It is an unbranched polymer made from N-acetyl-d-glucosamine (NAG) linked by beta-glycosidic bond. Recent studies have used chitin as a treatment for osteoarthritis and immunomodulation.
