PROTEIN SYNTHESIS QUIZ

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

None of these

Small fragments

Large fragments

Large genome

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Thymidine

is replaced by uracil in RNA

can participate in hydrophobic interactions due to its methyl group

normally forms two hydrogen bonds with adenosine

All of these

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The most stabilizing force for nucleic acids is

conformational entropy

Van der Waals

electrostatic bond

hydrogen bonds

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Nucleoside is a pyrimidine or purine base

covalently bonded to a sugar

None of these

ionically bonded to a sugar

hydrogen bonded to a sugar

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Nucleic acids can be analyzed experimentally by their

none of these

molecular weight

absorption of visible light

absorption of uv light

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

10 kJ/mol

30 kJ/mol

20 kJ/mol

25 kJ/mol

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Which of the following is a purine?

Adenine

Uracil

Cytosine

Thymine

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

adenine

guanine

thymine

cytosine

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

mRNA

RNA

DNA

rDNA

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

is independent of G - C content

decreases with increasing salt

increases with increasing salt

does not depend on hydrophobic interactions

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