Question

Which of the following is NOT a correct linkage of alpha-D-glucosyl units in starch?

A) (1→6) linkages
B) (1→4) linkages
C) (1→2) linkages
D) (1→3) linkages

Answer 1

The correct linkage of alpha-D-glucosyl units in starch is (1→4) linkages.

Step-by-step explanation:

Starch is composed of alpha-D-glucose units, which are linked together by glycosidic bonds. The correct linkages in starch are (1→4) linkages in the linear chain and (1→6) linkages at the branching points. Therefore, the correct answer is B) (1→4) linkages.