Which of the following molecules does NOT contain a B-1,4 glycosidic linkage?

A) starch

B) chitin

C) cellulose

D) peptidoglycan

E) none of the above

Chitin, Cellulose and Peptidoglycan (B, C and D)

Explanation:

Both chitin and cellulose are composed mainly of glucides, bound by glycosidic bonds of the Beta 1-4 type. This is largely why they cannot be digested by most non-herbivorous animals.

As for peptidoglycans, it is a net. It is a molecular framework present in bacteria that has β1-4 and α1-4 bonds in different proportions.