MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 optimum pH for the growth of most bacteria lies between _______ |
| A. | 5-9 |
| B. | 6.5-7.5 |
| C. | 2-3.5 |
| D. | 9-9.5 |
| Answer» C. 2-3.5 | |
| 2. |
Which of the following are functions of phosphates used in the preparation of media? |
| A. | they act as buffer |
| B. | source of phosphorous |
| C. | act as “reserve alkali” |
| D. | they act as buffer and is a source of phosphorous |
| Answer» E. | |
| 3. |
The GasPak system is suitable for which of the following? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultatively anaerobic bacteria |
| D. | Microaerophilic bacteria |
| Answer» C. Facultatively anaerobic bacteria | |
| 4. |
The Reactive Oxygen Species(ROS) produced by some bacteria are degraded by which of the following enzymes? |
| A. | Peroxidase |
| B. | Lyase |
| C. | Catalase |
| D. | Superoxide dismutase, Catalase and Peroxidase |
| Answer» E. | |
| 5. |
WHICH_OF_THE_FOLLOWING_ARE_FUNCTIONS_OF_PHOSPHATES_USED_IN_THE_PREPARATION_OF_MEDIA??$ |
| A. | they act as buffer |
| B. | source of phosphorous |
| C. | act as “reserve alkali” |
| D. | they act as buffer and is a source of phosphorous |
| Answer» E. | |
| 6. |
The_optimum_pH_for_the_growth_of_most_bacteria_lies_between_______$ |
| A. | 5-9 |
| B. | 6.5-7.5 |
| C. | 2-3.5 |
| D. | 9-9.5 |
| Answer» C. 2-3.5 | |
| 7. |
The GasPak system is suitable for which of the following? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultatively anaerobic bacteria |
| D. | Microaerophilic bacteria |
| Answer» C. Facultatively anaerobic bacteria | |
| 8. |
Which of the following ROS is a powerful oxidizing agent? |
| A. | Superoxide radical |
| B. | Hydrogen peroxide |
| C. | Hydroxyl radical |
| D. | Singlet oxygen |
| Answer» C. Hydroxyl radical | |
| 9. |
The Reactive Oxygen Species(ROS) poduced by some bacteria are degraded by which of the following enzymes? |
| A. | Peroxidase |
| B. | Lyase |
| C. | Catalase |
| D. | Superoxide dismutase, Catalase and Peroxidase |
| Answer» E. | |
| 10. |
Microaerophilic bacteria require low levels of oxygen for growth. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
The bacterium Staphylococcus aureus is which type of bacteria? |
| A. | Psychrophile |
| B. | Mesophile |
| C. | Thermophile |
| D. | Mesophile and psychrophile |
| Answer» C. Thermophile | |
| 12. |
Which of the following factors are responsible for the stability of thermophiles at high temperatures? |
| A. | increased leakage of cell components |
| B. | presence of large no. of polar amino acids and alpha-helix protein |
| C. | thermal stability of ribosomes |
| D. | presence of Inositol diphosphate and thermal stability of ribosomes |
| Answer» E. | |
| 13. |
Mesophiles are group of bacteria that grow within the temperature range of? |
| A. | 0-20 degree Celsius |
| B. | 25-40 degree Celsius |
| C. | 45-60 degree Celsius |
| D. | more than 60 degree Celsius |
| Answer» C. 45-60 degree Celsius | |
| 14. |
The temperature that allows for most rapid growth during a short period of time is known as __________ |
| A. | |
| B. | Maximum Temperature |
| C. | Optimum Temperature |
| Answer» D. | |