Which of the following is/are nucleosides?

adenine

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thymine

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guanine

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all of these

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Solution

The correct option is D all of these
A nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. DNA and RNA are made by phosphodiester bonds of various nucleosides viz. adenine, guanine, thymine, uracil and cytosine.

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Which of the following is/are nucleosides?

The correct option is D all of theseA nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. DNA and RNA are made by phosphodiester bonds of various nucleosides viz. adenine, guanine, thymine, uracil and cytosine.

The correct option is D all of these
A nucleoside consists of a nitrogenous base covalently attached to a sugar (ribose or deoxyribose) but without the phosphate group. DNA and RNA are made by phosphodiester bonds of various nucleosides viz. adenine, guanine, thymine, uracil and cytosine.