ELECTRIC CIRCUITS QUIZ

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

Large fragments

Small fragments

Large genome

None of these

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Nucleic acids can be analyzed experimentally by their

molecular weight

absorption of uv light

none of these

absorption of visible light

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The sugar in RNA is , the sugar in DNA is

deoxyribose, ribose

ribose, phosphate

ribose, deoxyribose

ribose, uracil

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Nucleotide bases and aromatic amino acids absorb light respectively at

260 and 270 nm

280 and 260 nm

270 and 280 nm

260 and 280 nm

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

rDNA

DNA

RNA

mRNA

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A nucleotide consists of

paired bases

a sugar and a phosphate

a sugar, a base and a phosphate

a sugar, a base and three phosphates

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Nucleoside is a pyrimidine or purine base

None of these

hydrogen bonded to a sugar

ionically bonded to a sugar

covalently bonded to a sugar

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

guanine

thymine

cytosine

adenine

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Which of the following is a purine?

Cytosine

Thymine

Uracil

Adenine

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Thymidine

normally forms two hydrogen bonds with adenosine

is replaced by uracil in RNA

can participate in hydrophobic interactions due to its methyl group

All of these

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