MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
In the binary vector strategy, the sizes of the two vectors used are _____ for bigger plasmid and ______ for smaller T-DNA plasmid. |
| A. | 200, 20 |
| B. | 170, 20 |
| C. | 200, 50 |
| D. | 170, 50 |
| Answer» C. 200, 50 | |
| 2. |
What is the basis of “binary vector” strategy? |
| A. | No physical attachment |
| B. | Big size |
| C. | Strain dependence |
| D. | Lysogenic/lytic cycle |
| Answer» B. Big size | |
| 3. |
What is the binary vector strategy used for? |
| A. | Vector insertion into host |
| B. | Insertion of new DNA |
| C. | Manipulation of vector |
| D. | Manipulation of host |
| Answer» C. Manipulation of vector | |
| 4. |
What are opines? |
| A. | Bacterial nutrients |
| B. | Plant nutrients |
| C. | Telomere sites |
| D. | T-DNA ends |
| Answer» B. Plant nutrients | |
| 5. |
What are the plant host cells that contain T-DNA called? |
| A. | Infected |
| B. | Attacked |
| C. | Transformed |
| D. | Transfected |
| Answer» D. Transfected | |
| 6. |
What is the special feature of T-DNA? |
| A. | Expression of unusual genes |
| B. | Repression of unusual genes |
| C. | Cell proliferation |
| D. | Cell death |
| Answer» B. Repression of unusual genes | |
| 7. |
The T-DNA is maintained in ______ form in the plant. |
| A. | Stable |
| B. | Unstable |
| C. | Integrated |
| D. | Loosely bound |
| Answer» B. Unstable | |
| 8. |
What is the size range of T-DNA? |
| A. | 15 and 30 kb |
| B. | 5 and 10 kb |
| C. | 50 and 100 kb |
| D. | 1 and 5 kb |
| Answer» B. 5 and 10 kb | |
| 9. |
A remarkable feature of the Ti plasmid is that after infection a part of the molecule is integrated into plant chromosomal DNA. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
What is the size of the Ti plasmid? |
| A. | 10 kb |
| B. | 100 kb |
| C. | 20 kb |
| D. | 200 kb |
| Answer» E. | |
| 11. |
The ability to cause crown gall disease is associated with the presence of __________ within the bacterial cell. |
| A. | Plasmid |
| B. | Origin |
| C. | Replication sites |
| D. | Polymerase |
| Answer» B. Origin | |
| 12. |
Which disease is caused by Agrobacterium tumefaciens? |
| A. | Crown gall |
| B. | Carcinoma |
| C. | Angiogenesis |
| D. | Fungal infection |
| Answer» B. Carcinoma | |
| 13. |
What is Agrobacterium tumefaciens? |
| A. | Plant species |
| B. | Plant virus |
| C. | Soil microorganism |
| D. | Fertilizer |
| Answer» D. Fertilizer | |
| 14. |
Vectors based on naturally occurring ____________ of Agrobacterium are used in plants. |
| A. | Plasmids |
| B. | Phages |
| C. | Cos sites |
| D. | Chromosome |
| Answer» B. Phages | |
| 15. |
When were the cloning vectors for plants developed? |
| A. | 1900 |
| B. | 1980 |
| C. | 2000 |
| D. | 1910 |
| Answer» C. 2000 | |