nucleic-acids biochemistry question and answers -Page 2

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Nucleic Acids problems

1. Which of the following is found on RNA but not DNA?
Options
A. Uracil
B. Deoxyribose
C. Phosphate
D. Adenine

Correct Answer: Uracil

2. Which pyrimidine base contains an amino group at carbon 4?
Options
A. Cytosine
B. Thymine
C. Uracil
D. Adenine

Correct Answer: Cytosine

3. Nucleic acids can be analyzed experimentally by their
Options
A. molecular weight
B. absorption of visible light
C. absorption of uv light
D. none of these

Correct Answer: absorption of uv light

4. The most stabilizing force for nucleic acids is
Options
A. hydrogen bonds
B. electrostatic bond
C. Van der Waals
D. conformational entropy

Correct Answer: Van der Waals

5. The sugar in RNA is __________ , the sugar in DNA is __________
Options
A. deoxyribose, ribose
B. ribose, deoxyribose
C. ribose, phosphate
D. ribose, uracil

Correct Answer: ribose, deoxyribose

6. Nucleoside is a pyrimidine or purine base
Options
A. covalently bonded to a sugar
B. ionically bonded to a sugar
C. hydrogen bonded to a sugar
D. none of the above

Correct Answer: covalently bonded to a sugar

First 2

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