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Question

Which one is nucleotide?

A
Uridylic acid
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B
Thymidine
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C
Cytosine
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D
Glutamic acid
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Solution

The correct option is A Uridylic acid
The sugars which are present in the nucleotide are ribose or deoxyribose. The nitrogenous bases are purines and pyrimidines. The purines are adenine and guanine. The pyrimidines are thymine, uracil and cytosine. The phosphate is present as phosphoric acid. The nucleotide is formed by the union of a phosphate group with a nucleoside.
Uridylic acid is formed by combination of uracil as nitrogenous base, ribose sugar and triphosphate. It is mainly found in RNA. It is an ester of phosphoric acid with the nucleoside uridine.
So, the correct answer is option A.

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