Question

In amylose fraction, glucose residues are linked by

• A. $\alpha 1-4$ linkages
• B. $\beta 1-4$ linkages
• C. $\alpha 1-6$ linkages
• D. $\beta 1-6$ linkages

Answer 1

The correct option is A $\alpha 1-4$ linkages

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 exists in two forms amylose and amylopectin. Amylose is formed by linkage of glucose by alpha 1,4 glucose unit. It is a linear polymer.

So, the correct answer is option A.