OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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H group at 3’ position
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O group at 2’ position
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H group at 2’ position
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OH group at 2’ position
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Detailed explanation-1: -The structure of Ribose and Deoxyribose is almost identical, with just one difference. Ribose sugar has a hydroxyl (OH) group at position 2, whereas deoxyribose sugar has a hydrogen (H) atom at position 2. Due to this, deoxyribose sugar is more stable than ribose sugar.
Detailed explanation-2: -The ribose 2’-OH hydroxyl group of RNA is the major determinant for differences in conformation, hydration, and thermodynamic stability between RNA and DNA. The 2’-OH hydroxyl group serves as a scaffold for the stabilizing hydration network associated with RNA 2 and is a key player in RNA catalysis.
Detailed explanation-3: -Compare Ribose and Deoxyribose Structures The presence or absence of the-OH group on carbon (#2) is an important distinction between ribose and deoxyribose. Ribose has an alcohol at carbon # 2, while deoxyribose does not have the alcohol group.