Discussion
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- Question
In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at
Options- A. -60 to -78°C
- B. -20 to -30°C
- C. -30 to -48°C
- D. -48 to -58°C
- Correct Answer
- -60 to -78°C
- 1. Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?
Options- A. Pour plate
- B. Spread plate
- C. Both (a) and (b)
- D. Streak plate technique Discuss
- 2. Stuart's transport medium is used for transport of specimen containing
Options- A. Neisseria gonorrhoeae
- B. Salmonella
- C. Vibrio cholerae
- D. Shigella Discuss
- 3. Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate
Options- A. coliform bacteria
- B. gram positive bacteria
- C. yeasts
- D. acid fast organisms Discuss
- 4. Viable plate count can be obtained using
Options- A. Spread plate method
- B. Pour plate method
- C. both (a) and (b)
- D. Hemocytometer Discuss
- 5. The concentration of agar to obtain semi solid media is
Options- A. 1.5-20%
- B. 0.5% or less
- C. >10%
- D. >10%but<20% Discuss
- 6. In the pour plate method, the mixed culture is diluted directly in tubes of
Options- A. liquid agar medium
- B. sterile liquid usually water
- C. both (a) and (b)
- D. none of these Discuss
- 7. For the selection of endospore-forming bacteria, a mixed culture can be heated at
Options- A. 80°C for 10 minutes
- B. 70°C for 10 minutes
- C. 60°C for 10 minutes
- D. 90°C for 10 minutes Discuss
- 8. To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of
Options- A. 8.5
- B. 8.90
- C. 6.79
- D. 3.5 Discuss
- 9. Important example(s) of enriched medium/media is/ are
Options- A. Loeffler's serum slope
- B. Bordet-gengou medium
- C. Blood agar
- D. All of these Discuss
- 10. Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.
Options- A. bile salts
- B. low concentration of various dyes
- C. sugars
- D. low levels of nitrogen Discuss
Cell Cultures and Characteristics problems
Search Results
Correct Answer: Both (a) and (b)
Correct Answer: Neisseria gonorrhoeae
Correct Answer: yeasts
Correct Answer: both (a) and (b)
Correct Answer: 0.5% or less
Correct Answer: liquid agar medium
Correct Answer: 80°C for 10 minutes
Correct Answer: 8.5
Correct Answer: All of these
Correct Answer: bile salts
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