Identify the substances having glycosidic bond and peptide bond,respectively in their structure:

Options

A. Chitin, cholesterol
B. Glycerol, trypsin
C. Cellulose, lecithin
D. Inulin, insulin

Answer

D

Explanation

Inulin is a fructan (polysaccharide of fructose). Adjacent fructose units are linked through glycosidic bond. Insulin is a protein composed of 51 amino acids, adjacent amino acids are attached through peptide bond.