JEE Main Chemistry question

[AIEEE 2005] In both DNA and RNA, the heterocyclic base and phosphate ester linkages are at

(A) and respectively of the sugar molecule
(B) and respectively of the sugar moleculeCorrect
(C) and respectively of the sugar molecule
(D) and respectively of the sugar molecule

Answer: (B)

Solution

In both DNA and RNA, the nitrogenous base is attached to the anomeric carbon of the pentose sugar (forming the N-glycosidic bond that defines the nucleoside), while the phosphate group is

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Question ID VK-150702