Question

the models show the structures of the carbohydrates cellulose, starch, and glycogen.
cellulose branched starch glycogen
select the true statements.
the parallel chains in cellulose give cellulose its strength and rigidity.
glycogen has more branching than starch.
cellulose and starch have the same function in plant cells.
starch, cellulose, and glycogen are monosaccharides.

Explanation:

• For statement A: Cellulose has parallel, unbranched chains with hydrogen bonds between them, providing structural strength (e.g., in plant cell walls).
• For statement B: Glycogen (animal storage carbohydrate) has more frequent branching than starch (plant storage carbohydrate), allowing quicker glucose release.
• Statement C is false: Starch stores energy in plants; cellulose provides structure (cell walls).
• Statement D is false: Starch, cellulose, and glycogen are polysaccharides (polymers of glucose), not monosaccharides (single sugar units).

Answer:

A. The parallel chains in cellulose give cellulose its strength and rigidity.
B. Glycogen has more branching than starch.