OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What group is attached to the pyrimidine ring in thymine and is not present in uracil?
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ribose
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-CH3
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-NH2
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deoxyribose
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none of the above
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Explanation:
Detailed explanation-1: -Uracil is similar to thymine in terms of structure except for the methyl group at position 5 in the heterocyclic aromatic ring present in thymine. It has a chemical formula of C4H4N2O2. In complementary base pairing, uracil pairs with adenine. In general, uracil occurs in RNA, not in DNA.
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