Composed of a single type of sugar monomer (e.g., starch, glycogen, cellulose).
Can be linear (straight chains like cellulose) or branched (complex side chains like amylopectin or glycogen). polysaccharide
Composed of two or more different monomer units (e.g., hyaluronic acid, pectin, agar). Composed of a single type of sugar monomer (e