- 1(current)
Q. No.A protoxin is:
| 1. | A primitive toxin | 2. | A denatured toxin |
| 3. | Toxin produced by protozoa | 4. | Inactive toxin |
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The trigger for activation of toxin of Bacillus thuringiensis is:
| 1. | Acidic pH of stomach |
| 2. | High temperature |
| 3. | Alkaline pH of gut |
| 4. | Mechanical action in the insect gut |
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Bacillus thuringiensis (Bt) strains have been used to design novel:
| 1. | Biofertilizers | 2. | Biometallurgic techniques |
| 3. | Biomineralization processes | 4. | Bioinsecticidal plants |
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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. |
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Corn borer can be controlled by the proteins encoded by Bacillus thuringiensis gene:
| 1. | cryIAb | 2. | cryIAc |
| 3. | cryIIAb | 4. | cryIIIAc |
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- 1(current)
Q. No.
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