Discussion
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- Question
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by
Options- A. using enzyme called telomerase
- B. shortening of the double stranded replicated portion
- C. using RNA as a template
- D. none of the above
- Correct Answer
- using enzyme called telomerase
- 1. The role of primase is to
Options- A. dismantle RNA primer
- B. cleave and unwinds short sections of DNA ahead of the replication fork
- C. proofread base pairing
- D. synthesize an RNA primer to begin the elongation process Discuss
- 2. In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as
Options- A. mutational
- B. semiconservative
- C. discontinuous
- D. antiparallel Discuss
- 3. The melting of 40-45 bp at the oriC site of E. coli requires
Options- A. DNA + ATP + HU
- B. DNA + ATP + HU + DNAb
- C. DNA+ ATP + HU + DNAb + DNAa
- D. DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme Discuss
- 4. One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?
Options- A. Conservative theory
- B. Dispersive theory
- C. Semi-conservative theory
- D. Evolutionary theory Discuss
- 5. In a typical electrophoresis experiment, larger fragments of DNA move more
Options- A. slowly, so they appear nearer the top of a gel photograph
- B. quickly, so they appear nearer the top of a gel photograph
- C. slowly, so they appear nearer the bottom of a gel photograph
- D. quickly, so they appear nearer the bottom of a gel photograph Discuss
- 6. Which of the following species lack a 'classical' histone H1?
Options- A. Saccharomyces cerevisiae
- B. Strongylocentrotus purpuratus
- C. Xenopus laevis
- D. Arabidopsis thaliana Discuss
- 7. The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is
Options- A. DNA polymerase
- B. strandase
- C. helicase
- D. none of these Discuss
- 8. The packing ratio of nucleosomes is about
Options- A. 6
- B. 8
- C. 7
- D. 9 Discuss
- 9. Each replication bubbles consists of
Options- A. 3 replication forks
- B. 2 replication forks
- C. 4 replication forks
- D. 1 replication forks Discuss
- 10. The nicks or gaps between Okazaki fragments are eventually sealed by
Options- A. gyrase
- B. DNA ligase
- C. RNA ligase
- D. polymerase Discuss
DNA Structure and Replication problems
Search Results
Correct Answer: synthesize an RNA primer to begin the elongation process
Correct Answer: semiconservative
Correct Answer: DNA + ATP + HU
Correct Answer: Dispersive theory
Correct Answer: slowly, so they appear nearer the top of a gel photograph
Correct Answer: Saccharomyces cerevisiae
Correct Answer: helicase
Correct Answer: 7
Correct Answer: 2 replication forks
Correct Answer: DNA ligase
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