The double helix of dna in the b-form is stabilized by:

The double helix of dna in the b form is stabilized by-

1. covalent bond between the 3' end of one strand and the 5' end of another strand.
2. hydrogen bonding between the phosphate groups of two  side-by-side strands.

                     
                     hope this helps u
                         

To kill bacteria from our body especially from stomach