MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Fermentation Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not the composition of N-agar plates/ slants? |
| A. | Yeast/Beef extract |
| B. | Peptone |
| C. | NaCl |
| D. | Dextrose |
| Answer» E. | |
| 2. |
Which of the following method of preservation is more suitable and used widely? |
| A. | Dried Cultures |
| B. | Lyophilization |
| C. | Salt Storage |
| D. | Storage in liquid Nitrogen |
| Answer» C. Salt Storage | |
| 3. |
During the preservation of microbial cell culture ______ |
| A. | metabolism stops |
| B. | metabolism continues |
| C. | metabolism changes |
| D. | physiology changes |
| Answer» C. metabolism changes | |
| 4. |
The cryoprotective agents are used to prevent cell damage. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following is NOT the advantage of lyophilization? |
| A. | Dissolution of product |
| B. | Processed in aseptic conditions |
| C. | Handling and processing time increases |
| D. | Do not use heat |
| Answer» D. Do not use heat | |
| 6. |
The cultures grown on agar slopes may be stored in the refrigerator or freezer at 5 C to -20 C. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following is/are used in dried culture preservation? |
| A. | Sand |
| B. | Soil |
| C. | Sand and Soil |
| D. | Slits |
| Answer» D. Slits | |
| 8. |
Each batch of newly preserved cultures should be routinely checked to ensure their quality . Who outlined the statement? |
| A. | Lincoln |
| B. | Snell |
| C. | Malik |
| D. | Pridham |
| Answer» B. Snell | |
| 9. |
Which of the following method involves sublimation of cell water? |
| A. | Cryopreservation |
| B. | Lyophilization |
| C. | Dried Culture |
| D. | Desiccation |
| Answer» B. Lyophilization | |
| 10. |
The preservation by liquid Nitrogen is called as ___________ |
| A. | Cryopreservation |
| B. | Lyophilization |
| C. | Freeze-drying |
| D. | Desiccation |
| Answer» B. Lyophilization | |
| 11. |
Which of the following is NOT a cryoprotective agent? |
| A. | DMSO |
| B. | Glycerol |
| C. | Ethylene Glycol |
| D. | Paraffin wax |
| Answer» E. | |
| 12. |
What is the temperature of liquid nitrogen ( C)? |
| A. | -150 C |
| B. | -122 C |
| C. | -194 C |
| D. | -196 C |
| Answer» E. | |
| 13. |
The preservation of agar slopes has an expiration of 6 months and the agar needs to be changed every 6 months. Which of the following can be used to extent sub-culturing to 1 year? |
| A. | Paraffin oil |
| B. | DMSO |
| C. | Glycerol |
| D. | Loamy Soil |
| Answer» B. DMSO | |
| 14. |
Which of the following is NOT the technique of preservation? |
| A. | storage on agar slants |
| B. | storage under liquid nitrogen |
| C. | dried cultures |
| D. | storage in water |
| Answer» E. | |
| 15. |
Which scientists gave the details of the techniques of preservation? |
| A. | Jacob and Monod |
| B. | Kirsop and Doyle |
| C. | William and Wilkins |
| D. | Boliver and Rodriguez |
| Answer» C. William and Wilkins | |