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Home ‣ Microbiology ‣ Bacteriophages See What Others Are Saying!
- Question
A bacterial defense mechanism against bacteriophage is called
Options- A. concatamerization
- B. polymerization
- C. restriction
- D. lysogeny
- Correct Answer
- restriction
- 1. 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
- 2. 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 Discuss
- 3. The reproduction by budding occur in
Options- A. Rhodopseudomonas acidophila
- B. Hyphomicrobium vulgare
- C. Bacillus subtilis
- D. Both (a) and (b) Discuss
- 4. Ring test is used for
Options- A. C-reactive protein test
- B. Ascoli's thermoprecipitation test
- C. typing of streptococci and pneumococci
- D. all of the above Discuss
- 5. Thermus thermopiles is a
Options- A. gram negative eubacteria
- B. gram positive eubacteria
- C. gram negative archebacteria
- D. gram positive archebacteria Discuss
- 6. Which of the following viruses are acid-labile?
Options- A. Rhinoviruses
- B. Echoviruses
- C. Polioviruses
- D. Coxsackieviruses Discuss
- 7. Transmission of hepatitis G virus is
Options- A. Parenterally
- B. Sexually
- C. Both (a) and (b)
- D. None of these Discuss
- 8. Select the statement that does not apply to the kingdom Fungi
Options- A. The fungi are eukaryotic, multicellular, ingestive heterotrophs
- B. Some fungi form beneficial interrelationships with plants
- C. The fungal life cycle typically includes a spore stage
- D. Certain fungi are natural sources of antibiotic substances Discuss
- 9. Which of the following describes the effect of ionizing radiation on microbes?
Options- A. Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
- B. Substantially decreases enzymatic activity, slowing microbial reproduction
- C. Induces electrons and protons to jump out of the molecules of the microbe
- D. None of the above Discuss
- 10. Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?
Options- A. Homeostasis
- B. Tissues
- C. Reproduction
- D. Molecules Discuss
More questions
Correct Answer: metabolic plasmid
Correct Answer: Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
Correct Answer: Both (a) and (b)
Correct Answer: all of the above
Correct Answer: gram negative eubacteria
Correct Answer: Rhinoviruses
Correct Answer: Both (a) and (b)
Correct Answer: The fungi are eukaryotic, multicellular, ingestive heterotrophs
Correct Answer: Induces electrons and protons to jump out of the molecules of the microbe
Correct Answer: Molecules
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