Q. No.Why does the bacterium Bacillus thuringiensis not affected by the toxins produced by it that can kill arthropods?
1.
The toxin inactivated by proteins in the bacterial cells.
2.
The bacterial cell does not have organelles and thus it is harmless.
3.
It is produced as a pro-toxin by the bacterium.
4.
The protein needs post-transcriptional modification possible only in eukaryotic cells.
Alpha-1-antitrypsin was produced in a transgenic sheep, Tracy. This enzyme is used in the treatment of:
| 1. | Emphysema | 2. | Rheumatoid arthritis |
| 3. | Ovarian cancer | 4. | Pancreatitis |
GM crops have been modified with various traits. Golden rice has been developed by the International Rice Research Institute for:
| 1. | Improved shelf life | 2. | Disease resistance |
| 3. | Herbicide resistance | 4. | Improved nutritional value |
Transgenic animals used to test the safety of polio vaccine are:
| 1. | Mice | 2. | Monkeys |
| 3. | Rabbits | 4. | Pigs |
A possible permanent cure for SCID can be:
| 1. | Enzyme replacement therapy, in which functional ADA is given to the patient by injections. |
| 2. | Bone marrow transplantation. |
| 3. | A functional ADA cDNA (using a retroviral vector) introduced into lymphocytes. |
| 4. | Gene isolated from marrow cells producing ADA is introduced into cells at early embryonic stages. |
Transgenic mice are being used to test the safety of polio vaccine. They could replace the use of:
| 1. | Monkeys | 2. | Rabbits |
| 3. | Fowl | 4. | Frogs |
Nematode [Meloidogyne incognita] specific genes were transferred to tobacco plant using:
| 1. | Retroviral vectors | 2. | Gene gun |
| 3. | Agrobacterium mediation | 4. | Micro-injection |
Corn borer can be controlled by the proteins encoded by Bacillus thuringiensis gene:
| 1. | cryIAb | 2. | cryIAc |
| 3. | cryIIAb | 4. | cryIIIAc |
The name Genetic Engineering Approval Committee [GEAC] has been changed to:
| 1. | Genetic Engineering Advisory Committee |
| 2. | Genetic Engineering Appellate Committee |
| 3. | Genetic Engineering Appraisal Committee |
| 4. | Genetic Engineering Arbitration Committee |
Antisense technology:
| 1. | selectively blocks the expression of a gene. |
| 2. | combines genetic material from different species. |
| 3. | combines organelles and cells. |
| 4. | alters or transfers cells. |
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