Question

2/5
A model of DNA is shown. What components make up the backbone of a DNA molecule?
Q
Phosphate groups and pyrimidines
Pyrimidines and purines
Deoxyribose and phosphate groups
Purines and deoxyribose

Answer 1

The backbone of a DNA molecule is made up of deoxyribose sugar and phosphate groups. Therefore, the correct answer is:

**Deoxyribose and phosphate groups**.