Discussion
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- Question
A nucleotide consists of
Options- A. a sugar, a base and a phosphate
- B. a sugar and a phosphate
- C. paired bases
- D. a sugar, a base and three phosphates
- Correct Answer
- a sugar, a base and a phosphate
- 1. Nucleotide bases and aromatic amino acids absorb light respectively at
Options- A. 280 and 260 nm
- B. 260 and 280 nm
- C. 270 and 280 nm
- D. 260 and 270 nm Discuss
- 2. The unfavourable free energy associated with not satisfying a hydrogen bond after formation of the double helix is approximately
Options- A. 10 kJ/mol
- B. 20 kJ/mol
- C. 25 kJ/mol
- D. 30 kJ/mol Discuss
- 3. Because DNA is a highly charged polyanion, its stability to heat denaturation
Options- A. does not depend on hydrophobic interactions
- B. increases with increasing salt
- C. is independent of G - C content
- D. decreases with increasing salt Discuss
- 4. A purine with an amine (NH2) group on the 6th carbon is
Options- A. adenine
- B. cytosine
- C. thymine
- D. guanine Discuss
- 5. In gel electrophoresis, what fragments will move most quickly through a gel?
Options- A. Large fragments
- B. Small fragments
- C. Large genome
- D. None of these Discuss
- 6. Which of the following is a purine?
Options- A. Cytosine
- B. Adenine
- C. Thymine
- D. Uracil Discuss
- 7. A five carbon sugar lacking a hydrogen at the number 2 carbon is found in
Options- A. DNA
- B. RNA
- C. mRNA
- D. rDNA Discuss
- 8. Which of the following is found on RNA but not DNA?
Options- A. Uracil
- B. Deoxyribose
- C. Phosphate
- D. Adenine Discuss
- 9. Which pyrimidine base contains an amino group at carbon 4?
Options- A. Cytosine
- B. Thymine
- C. Uracil
- D. Adenine Discuss
- 10. 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 Discuss
Nucleic Acids problems
Search Results
Correct Answer: 260 and 280 nm
Correct Answer: 20 kJ/mol
Correct Answer: increases with increasing salt
Correct Answer: adenine
Correct Answer: Small fragments
Correct Answer: Adenine
Correct Answer: DNA
Correct Answer: Uracil
Correct Answer: Cytosine
Correct Answer: absorption of uv light
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