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. |
Hydantoinase and a carbamoylase used in the production of aminoacids from D-hydantoins may be obtained from _____________ species. |
| A. | yeast |
| B. | escherichia |
| C. | aspergillus |
| D. | arthrobacter |
| Answer» E. | |
| 2. |
A crude immobilized-enzyme preparation consisting of heat -treated achromobacter liquidum cells entrapped in a polyacrylamide gel has been used to convert L-histidine to urocanic acid effectively. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Immobilized __________ is prepared by entrapping Escherichia coli cells in a k-carageenan gel cross-linked with glutaraldehyde and hexamethylenediamine. |
| A. | raffinase |
| B. | lactase |
| C. | aspartase |
| D. | aminoacyclase |
| Answer» D. aminoacyclase | |
| 4. |
L-aspartic acid is used in _________ industry. |
| A. | cheese making |
| B. | food |
| C. | dairy |
| D. | sucrose |
| Answer» C. dairy | |
| 5. |
What does ‘Y’ represent in the following reaction?Fumaric acid + NH4+ \(\underset{x}{\rightleftharpoons}\) L-aspartic acid |
| A. | Invertase |
| B. | Histidase |
| C. | Aspartase |
| D. | Raffinase |
| Answer» B. Histidase | |
| 6. |
D-aminoacids are used in the production of _________ |
| A. | glucose syrups |
| B. | low calorific sweetener |
| C. | insecticides |
| D. | sunscreen agents |
| Answer» D. sunscreen agents | |
| 7. |
Which enzyme helps in the production of D-aminoacids? |
| A. | Aminoacyclase |
| B. | Invertase |
| C. | Hydantoinase |
| D. | Raffinase |
| Answer» D. Raffinase | |
| 8. |
Immobilized __________ was used to resolve racemic mixtures of aminoacids. |
| A. | hydantoinase |
| B. | aspartase |
| C. | histidase |
| D. | aminoacyclase |
| Answer» E. | |