Final answer:
Carbohydrates include both linear and branched polymers formed by monosaccharides through dehydration synthesis, resulting in starch, glycogen, and cellulose structures.
Step-by-step explanation:
The class of biomolecules that includes both linear and branched polymers is carbohydrates. Carbohydrates are composed of monosaccharides, disaccharides, and polysaccharides, which can form long chains that are sometimes branched. Glucose molecules can be linked in various ways leading to different structures such as starch, a linear polymer, and glycogen, a branched polymer. Both structures are formed through dehydration synthesis reactions by eliminating a water molecule to form glycosidic bonds. Polysaccharides like cellulose are also carbohydrates, providing structural support in plant cell walls, with linear polymer chains that can sometimes be branched.