Question

Cellulose in plant cell wall is made up of

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

Answer 1

The correct option is D unbranched chain of glucose molecules linked by $\beta ,1\to 4$ glycosidic bond

Cellulose

Cellulose forms the structural component of a plant cell wall. It is the most abundant organic compound on Earth.

It is a homopolysaccharide.

It is unbranched chain of glucose molecules linked by (\beta, 1\rightarrow 4\) glycosidic bonds.

All glucose molecules are linked by a glycosidic bond formed between $C_1$ of $1^{st}$ glucose and $C_4$ of the next glucose molecule.

Final answer
(2) Unbranched chain of glucose molecules linked by $\beta ,1\to 4$ glycosidic bond