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Nucleic Acids

Nucleic Acids
A five carbon sugar lacking a hydrogen at the number 2 carbon is found in

rDNA
mRNA
DNA
RNA

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Nucleic Acids
Nucleoside is a pyrimidine or purine base

ionically bonded to a sugar
None of these
hydrogen bonded to a sugar
covalently bonded to a sugar

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Nucleic Acids
The glycosidic bonds in DNA and RNA

are free to rotate over about 180°
stabilize Watson-Crick H-bonds
connect the sugar to the base
can be hydrolyzed by OH- ion

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Nucleic Acids
The sugar in RNA is __________ , the sugar in DNA is __________

ribose, uracil
deoxyribose, ribose
ribose, deoxyribose
ribose, phosphate

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Nucleic Acids
The most stabilizing force for nucleic acids is

Van der Waals
electrostatic bond
hydrogen bonds
conformational entropy

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Nucleic Acids
A purine with an amine (NH2) group on the 6th carbon is

adenine
thymine
cytosine
guanine

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MORE MCQ ON Nucleic Acids

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