Question

DNA is a polymer of

• A. nucleosides
• B. nucleotides
• C. purine and pyrimidine bases
• D. All of the above

Answer 1

Answer: (B)

nucleotides

Answer 2

DNA is polymer of nucleotide. A nucleotide is a unit of three components as follows: $\underbrace{ Phosphate + deoxyribose \, sugar +base }_{nucleotide}$ Such nucleotide units are joined in long chain by covalent and hydrogen bonds to form DNA.