(E) In a polypeptide or protein, amino acids are linked by a peptide bond.

(F) In a polysaccharide, the individual monosaccharide are linked by N-glycosidic bond.

(G) In a nucleic acid, a phosphate moiety links the 5’-carbon of one sugar of one nucleotide to the 3’-carbon of the sugar of the succeeding nucleotide.

(H) In nucleic acid, the bond between the phosphate and hydroxyl group of sugar is ester bond. As there is one such bond on either side, it is called phosphodiester bond.

(I) The backbone of nucleic acid is formed by sugar-Nitrogen base-sugar chain.

(J) The nitrogen bases are projected perpendicular to the backbone of nucleic acid.

(K) There are 2 hydrogen bonds between A and T and 3 hydrogen bonds between G and C.

(L) In B-DNA, at each step of ascent the strand turns 360o and rise per base pair would be 3.4 nm.