Question

7. What is the difference between the

bonds that hold each nucleotide together
and the bonds between the nitrogenous
bases?

Answer 1

The bonds which hold the nucleotides together are covalent bonds and the bonds between nitrogenous bases are hydrogen bonds.

Step-by-step explanation:

I'll just put some additional info here in case you need it:

There are two types of bonds in each nucleotide: glycosidic bond: bond between a nitrogenous base and deoxyribose pentose sugar; and phospho-diester bond: bond between two deoxyribose pentose sugar molecules. Both of these bonds are covalent, meaning that the participating atoms share electrons.

The bonds between nitrogenous bases are hydrogen bonds. Hydrogen bond is an attraction between two atoms that already participate in other chemical bonds. So it is not really "a real bond" but rather electrostatic force of attraction.