MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Enzyme Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not true for immobilized lactases? |
| A. | Product inhibition by galactose |
| B. | Unwanted oligosaccharide formation |
| C. | Microbial contamination |
| D. | Batch variability problems of acid hydrolysis |
| Answer» E. | |
| 2. |
Which of the following immobilized organism is not used to produce lactases? |
| A. | Kluyveromyces lactis |
| B. | Mortierella vinacea |
| C. | Aspergillus Niger |
| D. | Aspergillus Oryzae |
| Answer» C. Aspergillus Niger | |
| 3. |
Immobilized ______________ is used in the treatment of whey. |
| A. | raffinase |
| B. | lactase |
| C. | invertase |
| D. | rennet |
| Answer» C. invertase | |
| 4. |
A productivity of 16 tons of inverted syrup may be achieved using one liter of the granular enzyme. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which one of the following is not a step in production of glucose syrups using invertase? |
| A. | Yeast cells were autolyzed |
| B. | Filtration through a bed of calcium sulphate |
| C. | Adsorption into bone char |
| D. | Galactose released is destroyed by alkaline conditions |
| Answer» E. | |
| 6. |
Immobilized __________ is used to remove the raffinose and stachyose from soybean milk. |
| A. | raffinase |
| B. | xylose isomerase |
| C. | invertase |
| D. | papain |
| Answer» B. xylose isomerase | |
| 7. |
____________ is stirred with sugar beet juice in batch stirred tank reactors to remove raffinose. |
| A. | Kluyveromyces lactis |
| B. | Bacillus Licheniformis |
| C. | Mortierella vinacea |
| D. | Bacillus acidopullulyticus |
| Answer» D. Bacillus acidopullulyticus | |
| 8. |
Which of the following organism is capable of producing raffinase, but not invertase. |
| A. | Yeast |
| B. | Mortierella vinacea |
| C. | Bacillus acidopullulyticus |
| D. | Kluyveromyces lactis |
| Answer» C. Bacillus acidopullulyticus | |
| 9. |
_____________ isomerizes -D-glucopyranose to -D fructofuranose. |
| A. | Xylose isomerase |
| B. | Glucose isomerase |
| C. | Sucrose phosphorylase |
| D. | Invertase |
| Answer» B. Glucose isomerase | |
| 10. |
What does X represent in the following reaction?Starch (Gn) + orthophosphate ( underset{x}{ rightleftharpoons} ) Starch (Gn-1) + glucose 1- phosphate |
| A. | Lactase |
| B. | Invertase |
| C. | Phosphorylase |
| D. | Raffinase |
| Answer» D. Raffinase | |
| 11. |
Glucose is converted to fructose by _________ enzyme. |
| A. | lactase |
| B. | phosphorylase |
| C. | glucose isomerase |
| D. | raffinase |
| Answer» D. raffinase | |
| 12. |
Production of DE glucose syrup using glucoamylase has shortcomings as an object of commerce. |
| A. | True |
| B. | False |
| Answer» B. False | |