MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not related exponentially to partition co-efficient? |
| A. | Surface area |
| B. | Surface charge of the particles |
| C. | Hydrophobicity of the phases |
| D. | pH |
| Answer» E. | |
| 2. |
Which of this is a disadvantage of aqueous 2 phase system? |
| A. | The enzymes which enter the upper phase are gradually lost |
| B. | The enzymes are largely retained in homogeneous solution |
| C. | The enzymes are stabilized by the presence of the polymers in homogeneous solution |
| D. | No diffusion limitations to mass transfer exist |
| Answer» B. The enzymes are largely retained in homogeneous solution | |
| 3. |
Which of the following is an extractive bioconversion? |
| A. | Aspargine to aspartate |
| B. | Plasminogen to plasmin |
| C. | Starch to glucose |
| D. | Penicillin to penicilloate |
| Answer» D. Penicillin to penicilloate | |
| 4. |
Which of the following methodologies is not used to extract an enzyme from the upper phase of aqueous 2 phase system? |
| A. | Addition of salts |
| B. | Desalting |
| C. | Addition of a polymer |
| D. | Generating a new biphasic system |
| Answer» C. Addition of a polymer | |
| 5. |
Which of the following is not a use of aqueous-two phase system? |
| A. | Enzyme kinetics |
| B. | Separation of different types of cell membranes |
| C. | Purification of enzymes |
| D. | Extractive bioconversions |
| Answer» B. Separation of different types of cell membranes | |
| 6. |
Aqueous-two phase systems are of considerable value to biotechnology. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The most thoroughly investigated two-phase aqueous system is ___________ system. |
| A. | potassium phosphate buffer-polyethylene glycol |
| B. | agar-starch |
| C. | dextran-polyethylene glycol |
| D. | sodium carbonate-polyethylene glycol |
| Answer» D. sodium carbonate-polyethylene glycol | |
| 8. |
In 1896, a two-phase aqueous system was first time noted by ________ |
| A. | Miachelis and Menten |
| B. | Darwin |
| C. | Koshland |
| D. | Beijerinck |
| Answer» E. | |