Biochemistry - Nucleic Acids

Exercise :: Nucleic Acids - Section 1

  • Nucleic Acids - Section 1
11. 

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

A. DNA
B. RNA
C. mRNA
D. rDNA

Answer: Option A

Explanation:

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12. 

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

A. 10 kJ/mol
B. 20 kJ/mol
C. 25 kJ/mol
D. 30 kJ/mol

Answer: Option B

Explanation:

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13. 

The most stabilizing force for nucleic acids is

A. hydrogen bonds
B. electrostatic bond
C. Van der Waals
D. conformational entropy

Answer: Option C

Explanation:

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14. 

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

A. adenine
B. cytosine
C. thymine
D. guanine

Answer: Option A

Explanation:

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15. 

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

A. Uracil
B. Deoxyribose
C. Phosphate
D. Adenine

Answer: Option A

Explanation:

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