Cellulose is described as rigid due to its structure.

Cellulose is described as rigid due to its structure.

• A. Flexible
• B. Soluble
• C. Amorphous
• D. Rigid

Answer: (D)

The rigidity comes from the way cellulose is built: long, straight, unbranched chains of glucose units linked by beta-1,4-glycosidic bonds. The beta linkage makes the chains run straight rather than coil, and many chains align tightly and form crystalline microfibrils. These microfibrils are held together by extensive hydrogen bonding within and between chains, creating a dense, strong network. In plant cell walls, that network gives high tensile strength and a stiff, rigid structure. Because of this extensive hydrogen bonding and crystallinity, cellulose is not flexible or soluble, and it isn’t amorphous; its rigidity reflects this organized, tightly packed arrangement.

The rigidity comes from the way cellulose is built: long, straight, unbranched chains of glucose units linked by beta-1,4-glycosidic bonds. The beta linkage makes the chains run straight rather than coil, and many chains align tightly and form crystalline microfibrils. These microfibrils are held together by extensive hydrogen bonding within and between chains, creating a dense, strong network. In plant cell walls, that network gives high tensile strength and a stiff, rigid structure. Because of this extensive hydrogen bonding and crystallinity, cellulose is not flexible or soluble, and it isn’t amorphous; its rigidity reflects this organized, tightly packed arrangement.