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Nucleic Acids

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

RNA
rDNA
mRNA
DNA

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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

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

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

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

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Nucleic Acids
Because DNA is a highly charged polyanion, its stability to heat denaturation

decreases with increasing salt
increases with increasing salt
is independent of G - C content
does not depend on hydrophobic interactions

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

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

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

Large genome
None of these
Small fragments
Large fragments

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