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Nucleic Acids

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

Cytosine
Adenine
Thymine
Uracil

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Nucleic Acids
The unfavourable free energy associated with not satisfying a hydrogen bond after formation of the double helix is approximately

10 kJ/mol
20 kJ/mol
30 kJ/mol
25 kJ/mol

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

Large fragments
None of these
Large genome
Small fragments

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Nucleic Acids
The most stabilizing force for nucleic acids is

Van der Waals
conformational entropy
hydrogen bonds
electrostatic bond

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Nucleic Acids
Nucleoside is a pyrimidine or purine base

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

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Nucleic Acids
Nucleic acids can be analyzed experimentally by their

none of these
absorption of uv light
molecular weight
absorption of visible light

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