Question
Which of the following compounds forms starch on polymerization?
MHT CET
Chemistry
Biomolecules
2026
MHT CET 2026 (13 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. -D-glucose.
- B. -D-glucose.
- C. -L-glucose
- D. -L-glucose
Answer
A. -D-glucose.
Step-by-step solution
Starch is a polysaccharide composed of two components: amylose and amylopectin. Both amylose and amylopectin are polymers of -D-glucose. Amylose is a linear polymer with C1-C4 glycosidic linkages, while amylopectin is a branched polymer with C1-C4 and C1-C6 glycosidic linkages. Therefore, starch is formed by the polymerization of -D-glucose. Answer: -D-glucose.
Related: Chemistry — Biomolecules · All PYQ Banks