Question

Select all that apply. DNA's long chains of paired nucleotides are made up of _____.

a. acids
b. nitrogenous bases
c. phosphates
d. sugars

Answer 1

The back bone of nucleotides are sugar and phosphates groups

Answer 2

The right answers are : b. nitrogenous bases c. phosphates d. sugars.

Deoxyribonucleic acid (DNA) is the genetic information of most living organisms (on the other hand, some viruses, retroviruses, use ribonucleic acid (RNA) as genetic information).

- DNA is a polymer, made of units called nucleotides (or mononucleotides).

- The nucleotide consists of a phosphate + a sugar + a nitrogenous base. In DNA, the nucleotide is a deoxyribonucleotide (in RNA, the nucleotide is a ribonucleotide).