Question

identify the numbered parts of the dna molecule below and write the name on the corresponding lines.
hydrogen bond nucleotide
nitrogenous base sugar - phosphate backbone
9.________________________
10.________________________
11.________________________
12.________________________

Explanation:

• The sugar - phosphate backbone forms the sides of the DNA double helix.
• Nitrogenous bases pair in the middle of the helix via hydrogen bonds.
• A nucleotide is the basic building block of DNA, consisting of a sugar, phosphate, and nitrogenous base.

Answer:

1. sugar - phosphate backbone
2. Hydrogen Bond
3. nucleotide
4. Nitrogenous base