a glycosidic bond is the bond formed between two adjacent monosaccharides in a polysaccharide . Inulin is a polymer of fructose, making it a polysaccharide that contains glycosidic bonds . A peptide bond is the linkage that joins amino acids together to form a polypeptide or protein . Insulin is a protein (hormone) composed of polypeptide chains, and therefore contains peptide bonds . Other options are incorrect because glycerol, lecithin, and cholesterol are lipids or lipid components that do not contain these specific bonds as their primary polymerising linkage .