Question

part b
which of the following components of a nucleotide bond together to form the backbone of a dna molecule?
phosphate and sugar
nitrogenous base and phosphate
nitrogenous base and sugar

Explanation:

In a DNA molecule, the phosphate and sugar components of nucleotides bond together to form the backbone. The nitrogen - containing bases are attached to the sugar and are involved in base - pairing, not in forming the backbone.

Answer:

phosphate and sugar