Question

15. In the nucleotides found in nucleic acids, the linkage between the bases and the sugar involve: A. N-1 of pyrimidines and C-1 of the sugar B. N-3 of pyrimidines and C-l of the sugar C. N-1 of purines and C-5 of the sugar D. N-9 of purines and C-2 of the sugar

Answer 1

15) In the nucleotide of nucleic acid nitrogen-carbon linkage is between the N-9 nitrogen of purine bases or N-1itrogen of pyrimidine bases and the C-1 carbon of the sugar group.

So right answer is (A)

This bond is known as glycosidic bond.