41. | Which of the following chemotherapeutic agents may affect the growth of Campylobacter jejuni? |
a. | Vacomycin |
b. | Polymyxin |
c. | Trimethoprim |
d. | None of these |
View Answer Report Discuss 50-50! |
Answer: (d).None of these
|
42. | To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of |
a. | 8.5 |
b. | 8.90 |
c. | 6.79 |
d. | 3.5 |
View Answer Report Discuss 50-50! |
Answer: (a).8.5
|
43. | For the selection of endospore-forming bacteria, a mixed culture can be heated at |
a. | 80°C for 10 minutes |
b. | 70°C for 10 minutes |
c. | 60°C for 10 minutes |
d. | 90°C for 10 minutes |
View Answer Report Discuss 50-50! |
Answer: (a).80°C for 10 minutes
|
44. | The concentration of agar to obtain semi solid media is |
a. | 1.5-20% |
b. | 0.5% or less |
c. | >10% |
d. | >10%but<20% |
View Answer Report Discuss 50-50! |
Answer: (b).0.5% or less
|
45. | Which of the following bacteria dies quickly after drying? |
a. | Treponema pallidium |
b. | Mycobacterium tuberculosis |
c. | Staphylococcus aureus |
d. | Pseudomonas aeruginosa |
View Answer Report Discuss 50-50! |
Answer: (a).Treponema pallidium
|