MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Pharmaceutical Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a chemostat operating under steady state, a bacterial culture can be grown at dilution rate higher than the maximum growth rate by _________ |
| A. | Partial cell recycling |
| B. | Using sub optimal temperature |
| C. | pH cycling |
| D. | Substrate feed rate cycling |
| Answer» B. Using sub optimal temperature | |
| 2. |
How does impeller speed affect bubble size? |
| A. | As impeller speed increases, the bubble size increases |
| B. | As impeller speed increases, bubble size stays consistent |
| C. | As impeller speed increases, bubble size becomes inconsistent |
| D. | As impeller speed increases, the bubble size decreases |
| Answer» E. | |
| 3. |
What may cause foaming in a bioreactor? |
| A. | A decrease in agitation |
| B. | The formation of large stable bubbles |
| C. | The formation of small unstable bubbles |
| D. | The breaking of large unstable bubbles |
| Answer» E. | |
| 4. |
What is the value of mf / f for fluidized bed fermenter? |
| A. | 0.02 0.5 |
| B. | 0.05-0.08 |
| C. | 1.0-1.2 |
| D. | 0.0-0.02 |
| Answer» B. 0.05-0.08 | |
| 5. |
Which microbes are used in photobioreactors? |
| A. | Fungi |
| B. | Bacteria |
| C. | Microalgae |
| D. | Cyanobateria |
| Answer» D. Cyanobateria | |
| 6. |
Why packed bed bioreactors are good? |
| A. | Does not allow accumulation of products |
| B. | Allow ease in pH controlling |
| C. | Allow proper gas distribution |
| D. | Less concentration of enzymes or cells required because of immobilisation |
| Answer» B. Allow ease in pH controlling | |
| 7. |
What is the most important thing one should remember while working with fluidized bed reactor? |
| A. | Gas dispersion |
| B. | Medium pH |
| C. | Temperature |
| D. | Weight of solid particles |
| Answer» E. | |
| 8. |
Two-stage airlift bioreactors are used for the temperature dependent formation of products. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
There are three types of airlift bioreactors. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Which of the following is a characteristic for airlift bioreactors? |
| A. | More efficient than bubble column reactors |
| B. | Less efficient than bubble column reactors |
| C. | Equally efficient as bubble column reactors |
| D. | Not at all efficient |
| Answer» B. Less efficient than bubble column reactors | |
| 11. |
What is the aspect ratio of bubble column bioreactors? |
| A. | 1-3 |
| B. | 3-5 |
| C. | 4-6 |
| D. | 8-10 |
| Answer» D. 8-10 | |
| 12. |
Impellers in stirred tank bioreactors helps in ________________ |
| A. | Breaking down large bubbles into smaller ones |
| B. | Mixing of medium contents |
| C. | Homogenisation |
| D. | Homogenisation, mixing, breaking bubbles |
| Answer» E. | |
| 13. |
Sparger in stirred tank bioreactor helps in ________________ |
| A. | Proper gas distribution |
| B. | Proper mixing of medium |
| C. | Measuring temperature of medium |
| D. | Better sterility |
| Answer» B. Proper mixing of medium | |
| 14. |
How much fraction is the diameter of impeller than the diameter of the vessel in a stirred tank bioreactor? |
| A. | 1/5 |
| B. | 1/3 |
| C. | 1/2 |
| D. | 1/1 |
| Answer» C. 1/2 | |
| 15. |
Six types of bioreactors are, Continuous Stirred Tank Bioreactors, Bubble Column Bioreactors, Airlift Bioreactors, Fluidized Bed Bioreactors, Packed Bed Bioreactors and ____________ |
| A. | Hollow fibre reactor |
| B. | General purpose reactor |
| C. | Assembly reactor |
| D. | Photo bioreactor |
| Answer» E. | |