MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
What is the function of microcarrier beads? |
| A. | To give the cells the shape of beads |
| B. | It provides non-buoyancy condition |
| C. | It helps in the lysis of cells |
| D. | It provides protection and surface area |
| Answer» E. | |
| 2. |
Referring to Q6, 7 and Q8, and calculate the stirrer speed.(Given: Np = 5) |
| A. | 80.5 rpm |
| B. | 85.0 rpm |
| C. | 85.5 rpm |
| D. | 80.0 rpm |
| Answer» D. 80.0 rpm | |
| 3. |
Referring to Q6 and Q7 and, calculate the stirrer power. |
| A. | 1.13 10<sup>-2</sup> W |
| B. | 1.10 10<sup>-2</sup> W |
| C. | 1.20 10<sup>-2</sup> W |
| D. | 1.23 10<sup>-2</sup> W |
| Answer» B. 1.10 10<sup>-2</sup> W | |
| 4. |
Refer to Q6, and calculate the power dissipated per unit mass of fluid. |
| A. | 0.050 m<sup>2</sup> s<sup>-3</sup> |
| B. | 0.042 m<sup>2</sup> s<sup>-3</sup> |
| C. | 0.040 m<sup>2</sup> s<sup>-3</sup> |
| D. | 0.052 m<sup>2</sup> s<sup>-3</sup> |
| Answer» E. | |
| 5. |
Microcarrier beads 120 m in diameter are used to culture recombinant CHO cells for production of growth hormone. It is proposed to use a 6-cm turbine impeller to mix the culture in a 3.5-1itre stirred tank. Air and carbon dioxide are supplied by flow through the reactor headspace. The microcarrier suspension has a density of approximately 1010 kg m-3 and a viscosity of 1.3 x 10-3 Pa s. Estimate the kinematic viscosity. |
| A. | 1.30 10<sup>-6</sup> m<sup>2</sup>s<sup>-1</sup> |
| B. | 1.29 10<sup>-6</sup> m<sup>2</sup>s<sup>-1</sup> |
| C. | 1.50 10<sup>-6</sup> m<sup>2</sup>s<sup>-1</sup> |
| D. | 1.49 10<sup>-6</sup> m<sup>2</sup>s<sup>-1</sup> |
| Answer» C. 1.50 10<sup>-6</sup> m<sup>2</sup>s<sup>-1</sup> | |
| 6. |
What is the function of Pluronic f-68? |
| A. | To increase the foaming |
| B. | To decrease the foaming |
| C. | Increase cell attachment |
| D. | To change the composition of the cells |
| Answer» C. Increase cell attachment | |
| 7. |
Instrument air compressor should be used generally as a compressor? |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Larger foam is produced in bioreactors with increased headspace and small workspace? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Viscosity is inversely proportional to the size of eddies? |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Which type of forces stretch and distort the bubbles? |
| A. | Shear forces |
| B. | Strain forces |
| C. | Surface tension |
| D. | Frictional forces |
| Answer» B. Strain forces | |