MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The average size of the cells in the exponential phase is ___________ |
| A. | larger than the initial size |
| B. | smaller than the initial size |
| C. | equal to the initial size |
| D. | maybe smaller or larger than the initial size |
| Answer» C. equal to the initial size | |
| 2. |
Which of the following is used to grow bacterial culture continuously? |
| A. | Chemostat |
| B. | Hemostat |
| C. | Coulter-Counter |
| D. | Turbidostat |
| Answer» B. Hemostat | |
| 3. |
Which phase shows the reproduction rate equal to the equivalent death rate? |
| A. | Log phase |
| B. | Stationary phase |
| C. | Death phase |
| D. | Lag phase |
| Answer» C. Death phase | |
| 4. |
In the growth equation: n = 3.3 (log10 N – log10 No), n stands for ____________ |
| A. | total population |
| B. | initial population |
| C. | number of generations |
| D. | growth constant |
| Answer» D. growth constant | |
| 5. |
The portion of the growth curve where rapid growth of bacteria is observed is known as ____________ |
| A. | Lag phase |
| B. | Logarithmic phase |
| C. | Stationary phase |
| D. | Decline phase |
| Answer» C. Stationary phase | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_USED_TO_GROW_BACTERIAL_CULTURE_CONTINUOUSLY??$ |
| A. | Chemostat |
| B. | Hemostat |
| C. | Coulter-Counter |
| D. | Turbidostat |
| Answer» B. Hemostat | |
| 7. |
The_average_size_of_the_cells_in_the_exponential_phase_is____________$ |
| A. | larger than the initial size |
| B. | smaller than the initial size |
| C. | equal to the initial size |
| D. | maybe smaller or larger than the initial size |
| Answer» C. equal to the initial size | |
| 8. |
Which phase shows reproduction rate equal to the equivalent death rate? |
| A. | Log phase |
| B. | Stationary phase |
| C. | Death phase |
| D. | Lag phase |
| Answer» C. Death phase | |
| 9. |
In which of the following phase secondary metabolites are produced during growth? |
| A. | Lag phase |
| B. | Log/Exponential phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 10. |
During exponential phase, growth rate is _______ |
| A. | same as generation time |
| B. | reciprocal of generation time |
| C. | time required for population to double |
| D. | rate of doubling population |
| Answer» C. time required for population to double | |
| 11. |
The generation time for E.coli is ________ |
| A. | 20 minutes |
| B. | 35 minutes |
| C. | 2 minutes |
| D. | 13 minutes |
| Answer» B. 35 minutes | |
| 12. |
Lag phase is also known as ___________ |
| A. | period of initial adjustment |
| B. | transitional period |
| C. | generation time |
| D. | period of rapid growth |
| Answer» B. transitional period | |
| 13. |
In the growth equation: n= 3.3 (log10 N – log10 No ), n stands for____________$ |
| A. | total population |
| B. | initial population |
| C. | number of generations |
| D. | growth constant |
| Answer» D. growth constant | |
| 14. |
The growth of bacterial population follows a geometric progression. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
The portion of the growth curve where a rapid growth of bacteria is observed is known as ____________ |
| A. | Lag phase |
| B. | Logarithmic phase |
| C. | Stationary phase |
| D. | Decline phase |
| Answer» C. Stationary phase | |