Discussion
Home ‣ Microbiology ‣ Microbial Recombination and Gene Transfer Comments
- Question
Which of the following statement describes plasmids?
Options- A. Another name for a protoplast
- B. A complex membrane structure that covers the chromosome of bacteria
- C. Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
- D. None of the above
- Correct Answer
- Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
- 1. The transposase gene encodes an enzyme that facilitate
Options- A. viral replication within a genome
- B. general recombination
- C. site-specific integration of transposable elements
- D. none of the above Discuss
- 2. The plasmid which makes the host more pathogenic is
Options- A. F factors
- B. Metabolic plasmid
- C. Virulence plasmid
- D. None of these Discuss
- 3. The type of recombination that commonly occurs between a pair of homologous DNA sequences is,
Options- A. mutagenic recombination
- B. site-specific recombination
- C. replicative recombination
- D. general recombination Discuss
- 4. What is the term used for a segment of DNA with one or more genes in the centre and the two ends carrying inverted repeat sequences of nucleotides?
Options- A. Plasmid
- B. Transposon
- C. Insertion sequence
- D. None of these Discuss
- 5. When composite transposons are formed
Options- A. a small deletion occurs in the transposase gene of an IS element
- B. a small deletion occurs in the transposase gene of an IS element and plasmid is integrated
- C. an IS element integrates with another IS element with the help of a plasmid
- D. two IS elements integrate into a chromosome with only a small distance separating them Discuss
- 6. In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by
Options- A. conjugal transfer by a self-transmissible plasmid
- B. generalized phage transduction
- C. natural transformation
- D. none of the above Discuss
- 7. Plasmid that carries genes encoding enzymes, which degrade substances such as aromatic compounds, pesticides or sugar are
Options- A. F factors
- B. metabolic plasmid
- C. virulence plasmid
- D. none of these Discuss
- 8. The plasmid-mediated properties is/are
Options- A. fermentation of lactose
- B. production of enterotoxin
- C. resistance to antibiotics
- D. all of these Discuss
- 9. F factor plasmids play a major role in
Options- A. conjugation
- B. replication
- C. transduction
- D. trasnscription Discuss
- 10. Which of the following statement can describe horizontal transfer?
Options- A. The synthesis of protein in RNA
- B. The transmission of genetic information from one independent, mature organism to another
- C. The transmission of genetic information from parent to offspring
- D. The synthesis of RNA from a DNA template Discuss
Microbial Recombination and Gene Transfer problems
Search Results
Correct Answer: site-specific integration of transposable elements
Correct Answer: Virulence plasmid
Correct Answer: general recombination
Correct Answer: Transposon
Correct Answer: two IS elements integrate into a chromosome with only a small distance separating them
Correct Answer: natural transformation
Correct Answer: metabolic plasmid
Correct Answer: all of these
Correct Answer: conjugation
Correct Answer: The transmission of genetic information from one independent, mature organism to another
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