MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which device is used to pick a single bacterial cell from a mixed culture? |
| A. | microscope |
| B. | micropipette |
| C. | microprobe |
| D. | micromanipulator |
| Answer» E. | |
| 2. |
Dilution of the mixed culture is a common step in all the three methods: the streak-plate, the spread-plate and the pour-plate technique. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
In pour-plate method, the medium should be maintained at what temperature? |
| A. | 37 degree C |
| B. | 67 degree C |
| C. | 45 degree C |
| D. | 0 degree C |
| Answer» D. 0 degree C | |
| 4. |
Roll-tube technique is used to isolate ___________ |
| A. | aerobes |
| B. | anaerobes |
| C. | facultatives |
| D. | stringent anaerobes |
| Answer» E. | |
| 5. |
WHICH_DEVICE_IS_USED_TO_PICK_A_SINGLE_BACTERIAL_CELL_FROM_A_MIXED_CULTURE??$ |
| A. | microscope |
| B. | micropipette |
| C. | microprobe |
| D. | micromanipulator |
| Answer» E. | |
| 6. |
Nichrome loop wire is used in which of the following techniques? |
| A. | Pour-plate |
| B. | Streak-plate |
| C. | Spread-plate |
| D. | Roll-tube technique |
| Answer» C. Spread-plate | |
| 7. |
What is the temperature of liquid nitrogen? |
| A. | -120 degree C |
| B. | 0 degree C |
| C. | -150 degree C |
| D. | -196 degree C |
| Answer» E. | |
| 8. |
Which of the following is a function of cryoprotective agents? |
| A. | for long-term preservation of cultures |
| B. | prevents cell damage due to ice crystal formation |
| C. | prevents formation of ice |
| D. | to trap the liquid nitrogen |
| Answer» C. prevents formation of ice | |
| 9. |
Which of the following are not performed in lyophilization? |
| A. | agar slant is covered with mineral oil |
| B. | cell suspension is frozen at -60 degree to -78 degree C |
| C. | vials are connected to high-vacuum line |
| D. | bacterial sample is dehydrated |
| Answer» B. cell suspension is frozen at -60 degree to -78 degree C | |
| 10. |
Dilution of the mixed culture is a common step in all the three methods: the streak-plate,the spread-plate and the pour-plate technique. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following method can be used to determine the number of bacteria quantitatively? |
| A. | Streak-plate |
| B. | Spread-plate |
| C. | Pour plate |
| D. | Pour-plate and spread plate |
| Answer» E. | |
| 12. |
In pour-plate method,the medium should be maintained at what temperature? |
| A. | 37 degree C |
| B. | 67 degree C |
| C. | 45 degree C |
| D. | 0 degree C |
| Answer» D. 0 degree C | |
| 13. |
Roll-tube technique is used to isolate ___________ |
| A. | aerobes |
| B. | anaerobes |
| C. | facultatives |
| D. | stringent anaerobes |
| Answer» E. | |