MHT CET202613 April 2026Evening ShiftChemistryBiomoleculesActual
Which of the following compounds forms starch on polymerization?
Options
- A-D-glucose.
- B-D-glucose.
- C-L-glucose
- D-L-glucose
Correct 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.