MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Starvation proteins are produced by a culture during which of the following segments of growth curve? |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 2. |
What is the generation time if 100 bacterial cells growing logarithmically for 5 hours produced 1.7×106 cells? |
| A. | 0.351 generations/hour |
| B. | 0.353 generations/hour |
| C. | 0.355 generation/hour |
| D. | 0.357 generation/hour |
| Answer» E. | |
| 3. |
In the accelerated phase, cell starts to _________ |
| A. | increase and the division rate increases to reach a maximum |
| B. | decrease and the division rate increases to reach a maximum |
| C. | increase and the division rate decreases to reach a maximum |
| D. | increase and the division rate increases to reach a minimum |
| Answer» B. decrease and the division rate increases to reach a maximum | |
| 4. |
Which phase has the condition of specific growth rate “μ ≈ μmax”? |
| A. | Lag phase |
| B. | Log phase |
| C. | Growth phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 5. |
Which phase has the condition of specific growth rate “μ = 0”? |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» E. | |
| 6. |
Estimate the value of “rX”,which is the volumetric rate of biomass production. |
| A. | kg m-1 s-1 |
| B. | kg ms-1 |
| C. | kg m-3s-1 |
| D. | kg m-3s-3 |
| Answer» D. kg m-3s-3 | |
| 7. |
WHAT_IS_THE_GENERATION_TIME_IF_100_BACTERIAL_CELLS_GROWING_LOGARITHMICALLY_FOR_5_HOURS_PRODUCED_1.7‚ÄÖ√†√∂‚Àւ•106_CELLS??$# |
| A. | 0.351 generations /hour |
| B. | 0.353 generations/hour |
| C. | 0.355 generation/hour |
| D. | 0.357 generation/hour |
| Answer» E. | |
| 8. |
Starvation proteins are produced by a culture during which of the following segments of growth curve?$ |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 9. |
Which of the following is used to grow bacterial cultures continuously?$ |
| A. | Chemostat |
| B. | Thermostat |
| C. | Haemostat |
| D. | Coulter counter |
| Answer» B. Thermostat | |
| 10. |
How else can we measure biomass? |
| A. | Rheometry |
| B. | Nephelometer |
| C. | Spectrophotometer |
| D. | Mass spectrometry |
| Answer» D. Mass spectrometry | |
| 11. |
Mean growth rate constant is the number of generations per unit time, often expressed as generations per hour. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Generation time is the time required for a microbial population to double in number. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
The average size of cells during exponential phase of growth is _________ |
| A. | Greater than the lag phase |
| B. | Lesser than the lag phase |
| C. | Equal to lag phase |
| D. | Constant |
| Answer» C. Equal to lag phase | |
| 14. |
In the accelerated phase, cell starts to ________? |
| A. | increase and the division rate increases to reach a maximum |
| B. | decrease and the division rate increases to reach a maximum |
| C. | increase and the division rate decreases to reach a maximum |
| D. | increase and the division rate increases to reach a minimum |
| Answer» B. decrease and the division rate increases to reach a maximum | |
| 15. |
The lag phase constitute of _________ |
| A. | No change in number, but an increase in mass |
| B. | Change in number but decrease in mass |
| C. | No change in number and decrease in mass |
| D. | Constant number and mass |
| Answer» B. Change in number but decrease in mass | |
| 16. |
Microbial growth is the result of both cell division and change in cell size. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
The specific growth rate of cells is independent on the concentration of nutrients in the medium. |
| A. | True |
| B. | False |
| Answer» C. | |
| 18. |
Which condition is correct according to the growth of cells in beginning? |
| A. | Cells are in small amount |
| B. | Cells are in medium amount |
| C. | Cells are in large amount |
| D. | Cells are negligible in amount |
| Answer» B. Cells are in medium amount | |
| 19. |
Which phase has the condition of specific growth rate “μ ≈ μmax”?$ |
| A. | Lag phase |
| B. | Log phase |
| C. | Growth phase |
| D. | Death phase |
| Answer» D. Death phase | |
| 20. |
Which phase has the condition of specific growth rate “μ =0”?$ |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» E. | |
| 21. |
Estimate the value of “rX”,which is the volumetric rate of biomass production. |
| A. | kg m<sup>-1</sup> s<sup>-1</sup> |
| B. | kg ms<sup>-1</sup> |
| C. | kg m-3s<sup>-1</sup> |
| D. | kg m-3s<sup>-3</sup> |
| Answer» D. kg m-3s<sup>-3</sup> | |