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The attachment between the base and sugar in a nucleotide is through ______ bond.

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The attachment between the base and sugar in a nucleotide is through ______ bond.

(a) hydrogen

(b) peptide

(c) phosphodiester

(d) glycosidic

I had been asked this question in examination.

Asked question is from Biomolecules in division Biomolecules of Chemistry – Class 12

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Right option is (d) glycosidic

For explanation: In nucleotides, the sugar ring is attached to the base by a bond between C1 carbon of the sugar and the nitrogen atom of the heterocyclic ring. This is a N-glycosidic bond. The phosphate group is bonded to the hydroxyl group of the C5 carbon of sugar.

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