(a)
Cellulose is a polymer of glucose. $\beta - D( + ) -$ glucose units are attached to each other by $C_{1}to\ C_{4}$ bonds through $\beta -$glycosidic linkage in structure of cellulose.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.