Question

DNA resembles RNA as both have

• A. Polymers of nucleotides
• B. Similar sugars
• C. Similar pyrimidine bases
• D. Aility to replicate

Answer 1

Answer: (A)

Polymers of nucleotides

The sugars which are present in the nucleotide are ribose or deoxyribose. The nitrogenous bases are purines and pyrimidines. The phosphate is present as phosphoric acid. The nucleotide is formed by the union of a phosphate group with a nucleoside.

DNA resembles RNA as both have polynucleotide chain. The two nucleotide is linked by the phosphodiester bond. It is formed by the linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another. Two hydroxyls (OH) groups on the phosphate molecule bind to the 3’ and 5’ carbons on two independent pentose sugars to form a bond.

So, the correct answer is option A.