Question

components of nucleic acids

1. phosphate
2. ribose sugar
3. deoxyribose sugar
4. uracil
5. thymine
6. adenine
7. guanine
8. cytosine

what #s make up the backbone of dna?

Explanation:

The backbone of DNA is made up of phosphate groups and deoxyribose sugar. Phosphate is 1 and deoxyribose sugar is 3 in the given list.

Answer:

D. 1 and 3