Glycans are polymers of monosaccharides or their derivatives linked together by glycosidic bonds. They exist in both linear and branched forms. Starch is a storage polysaccharide in plants composed of amylose and amylopectin. Amylose is an unbranched chain of glucose while amylopectin is highly branched with branches every 24-30 glucose units. Enzymes like amylase hydrolyze starch into sugars like maltose and dextrins. Dextrans are produced by bacteria and used in medical applications like plasma volume expansion. Glycogen is the form of starch storage in animal cells.