Question

nitrogenous bases: - adenine - thymine - guanine - cytosine phosphate group hydrogen bond complete the paragraph. weak covalent nitrogenous bases deoxyribose sugars strong hydrogen weak hydrogen strong covalent the structure of a dna molecule resembles a twisted ladder. the sides of the ladder, or the backbones of the molecule, are formed by bonds between the phosphate groups and the. the rungs of the ladder are formed by bonds between the

Explanation:

The DNA backbone is formed by strong covalent bonds between phosphate groups and deoxyribose sugars. The rungs are formed by weak hydrogen bonds between nitrogenous bases. Adenine pairs with thymine and guanine pairs with cytosine via these hydrogen - bonds.

Answer:

strong covalent, deoxyribose sugars, weak hydrogen, nitrogenous bases