NUCLEIC ACIDS QUIZ

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

Deoxyribose

Uracil

Phosphate

Adenine

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

mRNA

DNA

RNA

rDNA

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Thymidine

can participate in hydrophobic interactions due to its methyl group

All of these

is replaced by uracil in RNA

normally forms two hydrogen bonds with adenosine

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

20 kJ/mol

10 kJ/mol

30 kJ/mol

25 kJ/mol

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Which pyrimidine base contains an amino group at carbon 4?

Adenine

Uracil

Thymine

Cytosine

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Which of the following is a purine?

Uracil

Thymine

Cytosine

Adenine

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

Small fragments

None of these

Large fragments

Large genome

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The sugar in RNA is , the sugar in DNA is

ribose, deoxyribose

deoxyribose, ribose

ribose, uracil

ribose, phosphate

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Nucleoside is a pyrimidine or purine base

hydrogen bonded to a sugar

None of these

covalently bonded to a sugar

ionically bonded to a sugar

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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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