MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Vector Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Following infection with phi-31, __________ increases. |
| A. | tCopy number |
| B. | tMortality rate |
| C. | tSize |
| D. | tProtein production |
| Answer» B. tMortality rate | |
| 2. |
In the phi-31 system of L. lactis, gene of interest is placed under the control of _____________ promoter. |
| A. | tWeak |
| B. | tStrong |
| C. | tEnd |
| D. | tMiddle |
| Answer» E. | |
| 3. |
In the phi-31 system of L. lactis, _________ vector is used. |
| A. | tHybrid |
| B. | tMammalian |
| C. | tLow copy number |
| D. | tHigh copy number |
| Answer» D. tHigh copy number | |
| 4. |
Other than B. subtilis, the T7 expression system can also be used in __________ |
| A. | tLactobacillus |
| B. | tYeast |
| C. | tFungi |
| D. | tAgrobacterium |
| Answer» B. tYeast | |
| 5. |
The promoter used in T7 system is inducible by which of the following? |
| A. | tXylose |
| B. | tGalactose |
| C. | tLactose |
| D. | tFructose |
| Answer» B. tGalactose | |
| 6. |
E. coli T7 system is successfully implemented in B. subtilis. |
| A. | tTrue |
| B. | tFalse |
| Answer» B. tFalse | |
| 7. |
A promoter from which phage is incorporated in the Spac system? |
| A. | tLambda |
| B. | tM13 |
| C. | tProphage |
| D. | tSPO-1 |
| Answer» E. | |
| 8. |
Which gene of E. coli is contained in the Spac system? |
| A. | tTol |
| B. | tAmp |
| C. | tLacI |
| D. | tGal |
| Answer» D. tGal | |
| 9. |
When was the Spac system for low-GC hosts developed? |
| A. | t1990 |
| B. | t1984 |
| C. | t1963 |
| D. | t1936 |
| Answer» C. t1963 | |
| 10. |
The role of S1 is to bind ________ non-specifically. |
| A. | tMRNA |
| B. | tRNA |
| C. | tDNA |
| D. | tCDNA |
| Answer» C. tDNA | |
| 11. |
Which of the following does not lack MRNA selectivity? |
| A. | tStreptococcus |
| B. | tClostridium |
| C. | tE. coli |
| D. | tLactobacillus |
| Answer» D. tLactobacillus | |
| 12. |
The selectivity of ribosomes of B. subtilis is due to the lack of ________ |
| A. | tInducer |
| B. | tPromoter |
| C. | tProtein S1 |
| D. | tRepressor |
| Answer» D. tRepressor | |
| 13. |
Ribosomes from _________ recognize only homologous mRNA. |
| A. | tE. coli |
| B. | tB. subtilis |
| C. | tYeast |
| D. | tBacteriocins |
| Answer» C. tYeast | |
| 14. |
The promoters of B. subtilis vectors have conserved polyA and ________ tails. |
| A. | tPolyT |
| B. | tPolyC |
| C. | tPolyG |
| D. | tPolyA |
| Answer» B. tPolyC | |