2. Illustrate a glycosidic, peptide and a phospho-diester bond.

 Illustrate a glycosidic, peptide and a phospho-diester bond. 

(a) Glycosidic bond is formed normally between carbon atoms, 1 and 4, of neighbouring monosaccharide units.

                     

(b) Peptide bond is a covalent bond that joins the two amino acids by – NH – CO linkage.

                          

(c) Phosphodiester bond is a strong covalent bond between phosphate and two sugar groups. Such bonds form the sugar phosphate backbone of nucleic acids.