MCQOPTIONS
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MCQOPTIONS
This section includes 60 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following is the suitable temperature range for mesophiles? |
| A. | 20-30 C |
| B. | 25-40 C |
| C. | >40 C |
| D. | None of these |
| Answer» C. >40 C | |
| 52. |
During exponential growth, the growth rate is |
| A. | number of generations per unit time |
| B. | reciprocal of generation time |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» C. both (a) and (b) | |
| 53. |
Quantitative measurement of bacterial growth can be carried out by measuring |
| A. | cell count |
| B. | cell mass |
| C. | cell activity |
| D. | all of these |
| Answer» E. | |
| 54. |
Implicit factors |
| A. | depend on developing microflora |
| B. | can be synergistic |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» D. none of the above | |
| 55. |
Exponential phase of growth curve of bacteria is of limited duration because of |
| A. | rise in cell density |
| B. | accumulation of toxic metabolites |
| C. | exhaustion of nutrients |
| D. | all of these |
| Answer» E. | |
| 56. |
Starvation proteins are produced by a culture during which of the following segments of the growth curve? |
| A. | Lag phase |
| B. | Exponential phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 57. |
The cell reproduction in bacteria may occur by |
| A. | binary fission |
| B. | budding |
| C. | fragmentation |
| D. | all of these |
| Answer» E. | |
| 58. |
What is the primary source of food for marine life? |
| A. | Phytoplankton |
| B. | Zooplankton |
| C. | Sea weed |
| D. | Grass |
| Answer» B. Zooplankton | |
| 59. |
The fragmentation occurs in |
| A. | <i>Streptomyces species</i> |
| B. | <i>Nocardia species</i> |
| C. | <i>Bacillus subtilis</i> |
| D. | None of these |
| Answer» C. <i>Bacillus subtilis</i> | |
| 60. |
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of |
| A. | Liebig's law of the minimum |
| B. | Shelford's law of tolerance |
| C. | quorum sensing |
| D. | Heisenberg's principle of uncertainty |
| Answer» D. Heisenberg's principle of uncertainty | |