Cell Cultures and Characteristics problems
- 1. Which of the following is used for the proper maintenance and preservation of pure cultures?
Options- A. Periodic transfer to fresh media
- B. Preservation by overlaying cultures with mineral oil
- C. Preservation by lyophilization
- D. All of the above Discuss
Correct Answer: All of the above
- 2. Which of the following bacteria can grow in acidic pH?
Options- A. Vibrio cholerae
- B. Lactobacilli
- C. Shigella
- D. Salmonella Discuss
Correct Answer: Lactobacilli
- 3. Which of the following bacteria can grow in alkaline pH?
Options- A. Shigella
- B. Lactobacilli
- C. Salmonella
- D. Vibrio cholerae Discuss
Correct Answer: Vibrio cholerae
- 4. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?
Options- A. Gas in specimen
- B. Foul odour
- C. Presence of sulphur granules
- D. All of these Discuss
Correct Answer: All of these
- 5. A disease producing species occurring in a mixed culture can often be selected on the basis of its
Options- A. pathogenic properties
- B. special carbon source
- C. special nitrogen source
- D. none of these Discuss
Correct Answer: pathogenic properties
- 6. When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as
Options- A. differential medium
- B. enriched medium
- C. enrichment medium
- D. selective medium Discuss
Correct Answer: enrichment medium
- 7. Peptone water and nutrient broth are
Options- A. selective media
- B. enriched media
- C. basal media
- D. none of these Discuss
Correct Answer: basal media
- 8. Treponema species from human oral cavity can be selected by using
Options- A. pH of the medium
- B. incubation temperature
- C. cell size and motility
- D. all of these Discuss
Correct Answer: cell size and motility
- 9. All bacteria that inhabit the human body are
Options- A. heterotrophs
- B. chemolithotrophs
- C. autotrophs
- D. phototroph Discuss
Correct Answer: heterotrophs
- 10. Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni?
Options- A. Vacomycin
- B. Polymyxin
- C. Trimethoprim
- D. None of these Discuss
Correct Answer: None of these
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