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Nucleic acids: nucleotides, DNA and RNA
JEE Main level
Single correct option
Difficulty 2 of 3
bm148
In a nucleoside, the nitrogenous base is attached to the pentose sugar through an N-glycosidic bond at which carbon of the sugar?
A
C2
B
C1
C
C3
D
C5
Answer: B
The base is joined at C1 of ribose or deoxyribose. C5 carries the phosphate in a nucleotide and C3 forms the phosphodiester link.
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