MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Molecular Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How can we remove supercoils from cccDNA? |
| A. | Treat with DNase |
| B. | Treat with detergent |
| C. | Treat with endonuclease |
| D. | Application of heat |
| Answer» B. Treat with detergent | |
| 2. |
What is the relation between linking number (Lk), writing number (Wr) and twist number (Tw)? |
| A. | Lk = Tw – Wr |
| B. | Lk = Wr – Tw |
| C. | Tw = Lk – Wr |
| D. | Tw = Lk + Wr |
| Answer» D. Tw = Lk + Wr | |
| 3. |
Twist and writhe are interconvertible. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Interwound writhe and spiral writhe are topologically different. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Plectonomic writhe is __________ |
| A. | Cylindrical axis winding |
| B. | Long axis twisted around itself |
| C. | Helical turns of one strand about the other |
| D. | Number of encounters of the two strands of a helix |
| Answer» C. Helical turns of one strand about the other | |
| 6. |
3 – dimension structure of cccDNA is ___________ |
| A. | Nicked |
| B. | Supercoiled |
| C. | Flat |
| D. | Torsionally stressed |
| Answer» E. | |
| 7. |
Linking number is the sum of which geometric components? |
| A. | Twist and writhe |
| B. | Toroid and writhe |
| C. | Twist and wrap |
| D. | Twist and crossover |
| Answer» B. Toroid and writhe | |
| 8. |
Linking number is always a ___________ |
| A. | Whole number |
| B. | Prime number |
| C. | Integer |
| D. | Even number |
| Answer» D. Even number | |
| 9. |
Passing of one strand through the other in order to get separated is known as _______ |
| A. | Twist |
| B. | Linking number |
| C. | Writhing number |
| D. | Toroid |
| Answer» C. Writhing number | |
| 10. |
The two strands of cccDNA can be easily separated without any breakage of bonds. |
| A. | True |
| B. | False |
| Answer» C. | |