Chapter 13, Problem 13.19P

Interpretation Introduction

Interpretation:

How relatively weak hydrogen bonds hold the double helix together and allow DNA to function at the same time is to be explained.

Concept introduction:

Hydrogen bonding is the electrostatic force of attraction between hydrogen and the electronegative elements like $\text{F}$, $\text{O}$, $\text{N}$. It can be intermolecular or intramolecular hydrogen bonding. Intermolecular hydrogen bonding is the one that exists between different molecules such as between $\text{HF}$ and ${\text{H}}_2\text{O}$. Intramolecular hydrogen bonding exists between different parts of the same molecule such as in $\text{o}-\text{nitrophenol}$.