The carbohydrates that form part of nucleosides in RNA and DNA,respectively,are:
A)d-ribose and 2-deoxy-l-ribose
B)d-ribose and 2-deoxy-d-ribose
C)l-ribose and 2-deoxy-l-ribose
D)2-deoxy-d-ribose and d-ribose
E)2-deoxy-l-ribose and d-ribose

Question

Quizplus · Accepted Answer

RNA contains d-ribose as its carbohydrate component, while DNA contains 2-deoxy-d-ribose. This is because DNA requires a more stable sugar molecule in order to maintain the structural integrity of the double helix. Therefore, the correct carbohydrate components for RNA and DNA, respectively, are d-ribose and 2-deoxy-d-ribose, as stated in choice B.

The Carbohydrates That Form Part of Nucleosides in RNA and DNA,respectively,are