Question

Assertion (A): Cellulose is not digested by human beings.
Reason (R): Cellulose is a polymer of $\beta$-D-Glucose.

• A. A and R are true and R is the correct explanation of A.
• B. A and R are true and R is not the correct explanation of A.
• C. A is true but R is false.
• D. A is false but R is true.

Answer 1

The correct option is B A and R are true and R is not the correct explanation of A.

Option (B) is correct.
Cellulose is not digested by human beings because humans lack the enzyme necessary to digest cellulose.
Cellulose is a polymer of $\beta$-D-Glucose. Cellulose is a natural polymer, a long chain made by the linking of smaller molecules. The links in the cellulose chain are a type of sugar called, $\beta$ -D-glucose. In cellulose $\beta$ -D-Glucose units are joined by $\beta$ -(1,4) glycosidic linkage.