Cellulose, starch, and glycogen are all polymers of glucose. Which of the following are true? In cellulose and starch, glucoses are connected with beta-1,4 linkages, while glycogen uses alpha-1,4 linkages. Digestion of cellulose requires the cellulase enzyme. FALSE Cellulose is the least stable of the three. Humans can digest all polymers of glucose. All three contain alpha-1,6 glycosidic bonds. In cellulose, glucoses are arranged in straight chains, while glycogen and starch have a more helical structure.