Question

(i) Starch is a polymer of (ii) basic unit of starch is

• A. Fructose
• B. Glucose
• C. Sucrose
• D. Maltose

Answer 1

Answer: (B)

Glucose

Starch is used as food reserves in plants. It is a polymer of glucose. It is formed by the attachment of glucose unit by glycosidic bonds. The basic formula of starch is (C${}_6$H${}_{10}$O${}_5$)n. It exist in two forms amylose and amylopectin. Amylose is formed by linkage of glucose by alpha 1,4 glucose unit. It is a linear polymer. Amylopectin is a branched polymer of glucose where two polymeric chain of glucose of alpha 1,4 glucose unit are linked by alpha 1,6 linkage.

So, the correct answer is option B.