Rayon is a regenerated cellulose fiber made by dissolving cellulose (from wood pulp or cotton linters) and then extruding it through a spinneret to form fibers. Chemically, it is still cellulose - the process only changes the physical form, not the chemical composition. Glucose is the monomer that makes up cellulose, amylase is an enzyme, and pectin is a different polysaccharide.