Question
What is meant by nucleosides?###Write the structure of nucleoside. Give examples.
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Answer
A nucleoside contains two basic components of nucleic acids i.e. a pentose sugar and a nitrogenous base.
A nucleoside is formed when 1 -position of a pyrimidine (cytosine, thymine or uracil) or 9 -position of guanine or adenine base is attached to $C$ - I of sugar by $\beta$-linkage.
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