Discussion
Home ‣ Biochemistry ‣ DNA Structure and Replication Comments
- Question
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?
Options- A. Bleomycin
- B. Erythromycin
- C. Tunicamycin
- D. All of these
- Correct Answer
- Bleomycin
- 1. DNA replication results in
Options- A. two completely new DNA molecules
- B. two DNA molecules such that each one contains a strand of the original
- C. one new DNA molecules 1 old molecule
- D. one new molecule of RNA Discuss
- 2. Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?
Options- A. Leading strands
- B. Okazaki fragments
- C. Primers
- D. Lagging strand Discuss
- 3. The DNA polymerase in bacteria, responsible for DNA synthesis is
Options- A. Polymerase I
- B. Polymerase II
- C. Polymerase III
- D. all of these Discuss
- 4. Doubling the column's length increases resolution by a factor of
Options- A. (2)0.5
- B. 2
- C. 3
- D. 4 Discuss
- 5. Helium is generally preferred as carrier gas over nitrogen and hydrogen because
Options- A. it is inert
- B. it has a lower viscosity
- C. it doubles up as a party gas for balloons and funny voices
- D. all of above Discuss
- 6. The RNA primers used to initiate replication in E. coli
Options- A. result in Okazaki fragments on leading strand
- B. are removed by Pol I
- C. are joined together by DNA ligase
- D. are removed by helicase + ATP Discuss
- 7. What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?
Options- A. B
- B. H
- C. S
- D. None of these Discuss
- 8. There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?
Options- A. One
- B. About 100
- C. Thousands and tens of thousands
- D. none of these Discuss
- 9. An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called
Options- A. transposase
- B. helicase
- C. reverse transcriptase
- D. restriction endonuclease Discuss
- 10. The size of a linear DNA fragment in a gel can be estimated by
Options- A. fluorescence in UV light
- B. the sedimentation coefficient
- C. the time it takes the gel to run
- D. comparison with a molecular weight standard such as Hind III digested phage lambda Discuss
DNA Structure and Replication problems
Search Results
Correct Answer: two DNA molecules such that each one contains a strand of the original
Correct Answer: Okazaki fragments
Correct Answer: Polymerase III
Correct Answer: (2)0.5
Correct Answer: all of above
Correct Answer: are removed by Pol I
Correct Answer: H
Correct Answer: Thousands and tens of thousands
Correct Answer: restriction endonuclease
Correct Answer: comparison with a molecular weight standard such as Hind III digested phage lambda
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