Question

Identify the difference between the sugars in DNA and RNA.

• A. In RNA, the sugar residue is neuraminic acid while the sugar residue in DNA is deoxy-neuraminic acid
• B. In DNA, the sugar residue is deoxy-adenine whereas in RNA it is adenine
• C. In RNA, the sugar residue is a reducing sugar whereas in DNA it is not
• D. In DNA, the sugar is 2-deoxy-D-ribose whereas in RNA, it is D-ribose

Hint:

The sugar in RNA has a hydroxyl group at the 2' position, while DNA has a hydrogen atom at the same position.

Answer 1

The Correct Option is D

- The key difference between DNA and RNA is that DNA contains 2-deoxy-D-ribose, whereas RNA contains D-ribose. The absence of the hydroxyl group at the 2' position in DNA makes it more stable than RNA.