Find the correct combination, that can form a ribonucleotide of RNA.

Adenine + deoxyribose + phosphate

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Uracil + ribose + phosphate

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Thymine + deoxyribose + phosphate

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Guanine + deoxyribose + phosphate

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Solution

The correct option is A Uracil + ribose + phosphate
RNA is ribonucleic acid. It is a polymer of ribonucleotides. Ribonuleotides are phosphoric acid esters of ribonucleosides. The ribonucleosides are formed from pentose sugar ribose and nitrogenous bases which can be purine (adenine or guanine) or pyrimidine (cytosine or uracil). Pyrimidine base thymine is present in DNA in place of uracil and pentose sugar in DNA is 2' deoxyribose sugar in place of the ribose sugar. Thus the correct option is B

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Ribose and 2-deoxyribose can be differentiated by:

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