All starch is composed of two molecules: amylose and amylopectin. Both comprise chains of glucose molecules, but while amylose is non-branching, amylopectin branches. Blue Circle: Schematic of ...

Amylose is a type of polymer found in starch. It is composed of hundreds to thousands of glucose units. Amylopectin, on the other hand, is made up of thousands to millions of glucose units.