NUCLEIC ACIDS QUIZ

Which pyrimidine base contains an amino group at carbon 4?

Cytosine

Uracil

Adenine

Thymine

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Adenine

Deoxyribose

Uracil

Phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

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

RNA

mRNA

DNA

rDNA

TRUE ANSWER : ?
YOUR ANSWER : ?

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

25 kJ/mol

20 kJ/mol

30 kJ/mol

10 kJ/mol

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Large genome

Small fragments

Large fragments

TRUE ANSWER : ?
YOUR ANSWER : ?

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

is independent of G - C content

increases with increasing salt

decreases with increasing salt

does not depend on hydrophobic interactions

TRUE ANSWER : ?
YOUR ANSWER : ?

The sugar in RNA is , the sugar in DNA is

deoxyribose, ribose

ribose, uracil

ribose, deoxyribose

ribose, phosphate

TRUE ANSWER : ?
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The most stabilizing force for nucleic acids is

conformational entropy

hydrogen bonds

electrostatic bond

Van der Waals

TRUE ANSWER : ?
YOUR ANSWER : ?

Nucleic acids can be analyzed experimentally by their

absorption of visible light

absorption of uv light

none of these

molecular weight

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a purine?

Thymine

Cytosine

Uracil

Adenine

TRUE ANSWER : ?
YOUR ANSWER : ?

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