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B
Purine, pyrimidine and phosphate
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C
Purine or pyrimidine, sugar and phosphate
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D
Pyrimidine, sugar and phosphate
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Solution
The correct option is D Purine or pyrimidine, sugar and phosphate The sugars which are present in the nucleotide are ribose or deoxyribose. The nitrogenous bases are purines and pyrimidines. The phosphate is present as phosphoric acid. The nucleotide is formed by the union of a phosphate group with a nucleoside. A nucleoside, in fact, contains a sugar molecule along with an organic nitrogenous base.