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Nucleic Acids

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

adenine
cytosine
thymine
guanine

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

DNA
mRNA
rDNA
RNA

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Nucleic Acids
Which pyrimidine base contains an amino group at carbon 4?

Thymine
Adenine
Cytosine
Uracil

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Nucleic Acids
A nucleotide consists of

a sugar and a phosphate
a sugar, a base and a phosphate
paired bases
a sugar, a base and three phosphates

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Nucleic Acids
The glycosidic bonds in DNA and RNA

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

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Nucleic Acids
The most stabilizing force for nucleic acids is

conformational entropy
electrostatic bond
hydrogen bonds
Van der Waals

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