Concept explainers
Interpretation:
The molecular formulae for D-ribose and 2-deoxy-D-ribose, the difference in composition of both and chemical property that differs between the two has to be given.
Concept Introduction:
Composition of
Sugar: In both DNA and RNA, sugar portion is found. In DNA, the sugar is D-ribose, where at 2’hydroxyl group is absent and in RNA, the hydroxyl group is present at 2’ carbon.
Numbering the atoms in sugar and base rings:
In order to distinguish the atoms in the sugar of a nucleoside and atoms of a base ring, numbers without prime is used for atoms in the base ring and numbers with prime used for the atoms in the sugar ring.
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