Question
What is the structure indicated below?
A. Purine Nucleotide
B. Purine
C. Pyrimidine Nucleoside
D. Purine Nucleoside
Show Answer
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Correct Answer » D
Explanation
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Ans:D. Purine Nucleoside
The figure shows the nucleoside Adenosine,which is the base adenine attached to Ribose.
A nucleoside consists simply of a nucleobase (also termed a nitrogenous base) and a five-carbon sugar (either ribose or deoxyribose),
whereas a nucleotide is composed of a nucleobase, a five-carbon sugar, and one or more phosphate groups.
In a nucleoside, the base is bound to either ribose or deoxyribose via a beta-glycosidic linkage
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