Question

Cellulose, the most important constituent of plant cell wall is made up of

• A. branched chain of glucose molecules linked by $ \alpha $ , 1, 6 glycosidic bond at the site of branching
• B. unbranched chain of glucose molecules linked by $ \alpha $ , 1, 4, glycosidic bond
• C. branched chain of glucose molecules linked by $ \beta $ , 1, 4 glycosidic bond in straight chain and $ \alpha $ ,1, 6 glycosidic bond at the site of branching
• D. unbranched chain of glucose molecules linked by ( $ \beta $ , 1, 4 glycosidic bond

Answer 1

Answer: (D)

Cellulose $\left( C _{6} H _{10} O _{5}\right)_{n}$ is the most abundant organic polymer. It is a polysaccharide and consists of long unbranched chains of glucose residues linked by $\beta, 1-4$ glycosidic bonds. In plants, cellulose is formed from sugar. It serves as building material in the formation of cell wall.