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Nucleic Acids

Nucleic Acids
Which of the following is a purine?

Cytosine
Uracil
Adenine
Thymine

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Nucleic Acids
Nucleic acids can be analyzed experimentally by their

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

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

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

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Nucleic Acids
Which of the following is found on RNA but not DNA?

Adenine
Deoxyribose
Phosphate
Uracil

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

Uracil
Thymine
Cytosine
Adenine

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Nucleic Acids
The most stabilizing force for nucleic acids is

hydrogen bonds
conformational entropy
electrostatic bond
Van der Waals

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