Question

Name the type of linkage between 

(i) Nitrogen base and pentose sugar 

(ii) Pentose sugar and phosphate 

(iii) Two adjacent nucleotides 

(iv) N-bases of both the strands of DNA.

Answer 1

(i) Glycosidic bond (C-N-C) 

(ii) Phospho-ester bond 

(iii) Phospho-diester bond 

(iv) Hydrogen bond [Double hydrogen bond between A & T (A=T) & Triple hydrogen gas bond between C & G (C=C)]