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Question 27 А. consists of a sugar, an organic base, and phosphate(s). purine nucleoside O nucleotide base-pair Question 28 T
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Answer #1

Question 27

Ans - Nucleotide

A nucleotide consists of a base plus a molecule of sugar and one of phosphate group.

Question 28

Ans - Nitrogen bases

Variable part of DNA molecule is nitrogen base, these are A, G, T or C.

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