MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The batch culture or fermentation can be used to produce ________ |
| A. | Organic acids |
| B. | Amino acids |
| C. | Single Cell Protein |
| D. | Antibiotics |
| Answer» E. | |
| 2. |
Borrow et al. investigated the biosynthesis of Gibberellic acid by Gibberella fujikuroi and divided growth of organisms into balanced, storage and maintenance phase. What do you mean by storage phase? |
| A. | The phase equivalent to the early to middle exponential phase |
| B. | The phase equivalent to the late exponential phase |
| C. | The phase equivalent to the stationary phase |
| D. | The phase equivalent to the lag phase |
| Answer» C. The phase equivalent to the stationary phase | |
| 3. |
What is Idiophase? |
| A. | Production of secondary metabolites |
| B. | Production of primary metabolites |
| C. | Production of tertiary metabolites |
| D. | Production of quaternary metabolites |
| Answer» B. Production of primary metabolites | |
| 4. |
Which scientist(s) pointed out that the stationary phase is a misnomer in terms of the physiology of organism? |
| A. | Burrow et al. |
| B. | Bu’Lock et al. |
| C. | Bull |
| D. | Monod |
| Answer» D. Monod | |
| 5. |
The Yield Factor (Y) does not vary upon which of the following? |
| A. | pH |
| B. | Growth rate |
| C. | Temperature |
| D. | Amount of enzyme |
| Answer» E. | |
| 6. |
The Yield factor (Y) is the measure of the efficiency of _______ |
| A. | Conversion of anyone substrate into biomass |
| B. | Conversion of all the substrates into biomass |
| C. | The Affinity of an enzyme to the substrate |
| D. | Number of microbes which produced the biomass |
| Answer» B. Conversion of all the substrates into biomass | |
| 7. |
The size of fermenters is usually large in batch fermentation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following organisms represent the highest specific growth rate, µmax? |
| A. | Vibrio natriegens |
| B. | Methylomonas methanolytica |
| C. | Aspergillus nidulans |
| D. | Penicillium chrysogenum |
| Answer» B. Methylomonas methanolytica | |
| 9. |
Who first suggested that filamentous fungi have a ‘growth unit’ which is replicated at a constant rate? |
| A. | Trinci |
| B. | Petersen |
| C. | Plomley |
| D. | Griffiths |
| Answer» D. Griffiths | |
| 10. |
The following figure shows the growth of typical microbial culture in batch conditions. What is A, B, C and D? |
| A. | A-lag phase, B-log phase, C-stationary phase, D-deceleration |
| B. | A-log phase, B-lag phase, C-stationary phase, D-deceleration |
| C. | A-deceleration, B-log phase, C-lag phase, D-stationary |
| D. | A-lag phase, B-log phase, C-deceleration, D-stationary |
| Answer» E. | |
| 11. |
During batch fermentation, in which phase the microbes in the fermenter are adapting to the new environment? |
| A. | Lag phase |
| B. | Log or exponential phase |
| C. | Stationary phase |
| D. | Death phase |
| Answer» B. Log or exponential phase | |
| 12. |
The exponential phase may be described by the equation _______ |
| A. | dx/dt = µx |
| B. | dt/dx = µ |
| C. | dx/dt = µt |
| D. | dx2/dt2 = µ |
| Answer» B. dt/dx = µ | |
| 13. |
During batch culture/fermentation, nutrients in the fermenter are utilized at a fast rate. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
A period during which the growth rate of cells gradually increases is known as _____ |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Deceleration phase |
| Answer» C. Stationary phase | |
| 15. |
The Batch culture is a/an ______ culture system. |
| A. | Open |
| B. | Closed |
| C. | Isolated |
| D. | Semi-closed |
| Answer» C. Isolated | |