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Nucleic Acids

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

Uracil
Adenine
Cytosine
Thymine

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

DNA
rDNA
RNA
mRNA

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Nucleic Acids
Nucleotide bases and aromatic amino acids absorb light respectively at

280 and 260 nm
260 and 280 nm
270 and 280 nm
260 and 270 nm

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Nucleic Acids
In gel electrophoresis, what fragments will move most quickly through a gel?

Small fragments
Large genome
None of these
Large fragments

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

guanine
cytosine
adenine
thymine

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Nucleic Acids
The most stabilizing force for nucleic acids is

hydrogen bonds
Van der Waals
electrostatic bond
conformational entropy

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