MCQOPTIONS
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MCQOPTIONS
This section includes 20 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. |
The primer used for lagging strand synthesis in prokaryotes is an RNA primer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Helicase attaches to the leading strand during replication. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The topological unlinking of DNA in prokaryotes is promoted by ______________ |
| A. | Helicase |
| B. | Topoisomerase |
| C. | Tus |
| D. | Dna C |
| Answer» C. Tus | |
| 4. |
The arrest of replication fork motion at Ter sites require the action of ____________ protein. |
| A. | Tus |
| B. | Ter |
| C. | Helicase |
| D. | Topoisomerase |
| Answer» B. Ter | |
| 5. |
The termination sites are one way valves known as non-polar valves. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
The replication terminus involves ____________ identical non palindromic termination site. |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 7. |
THE_TERMINATION_SITES_ARE_ONE_WAY_VALVES_KNOWN_AS_NON-POLAR_VALVES_____________?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
The topological unlinking of DNA in prokaryotes is promoted by ______________$ |
| A. | Helicase |
| B. | Topoisomerase |
| C. | Tus |
| D. | Dna C |
| Answer» C. Tus | |
| 9. |
The_arrest_of_replication_fork_motion_at_Ter_sites_require_the_action_of______________protein.$ |
| A. | Tus |
| B. | Ter |
| C. | Helicase |
| D. | Topoisomerase |
| Answer» B. Ter | |
| 10. |
Which enzyme is used to remove the primer from the Okazaki fragment? |
| A. | Endonuclease |
| B. | RNase H |
| C. | 5’ exonuclease |
| D. | Polymerase |
| Answer» E. | |
| 11. |
The primer used for lagging strand synthesis in prokaryotes is a RNA primer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Helicase_attaches_to_the_leading_strand_during_replication. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
The replication terminus involves ____________ identical non palindromic termination site? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 14. |
The replication terminus is a segment of a number of ____________ bp. |
| A. | 350 |
| B. | 350000 |
| C. | 530 |
| D. | 530000 |
| Answer» C. 530 | |
| 15. |
Which of the following is not a function of Dna A? |
| A. | DNA binding |
| B. | DNA strand separation |
| C. | Initiates DNA melting |
| D. | Replication protein recruitment |
| Answer» D. Replication protein recruitment | |
| 16. |
Which of the following is not paired with its correct function? |
| A. | 9 mer = binding site for Dna A |
| B. | 13 mer = binding site for replication initiator protein |
| C. | AT rich DNA = unwinding site |
| D. | Dna A = replication initiator protein |
| Answer» C. AT rich DNA = unwinding site | |
| 17. |
With respect to the ori C motif choose the correctly paired option. |
| A. | 9 mer = 9 times |
| B. | 9 mer = 3 times |
| C. | 13 mer = 5 times |
| D. | 13 mer = 3 times |
| Answer» E. | |
| 18. |
There are two repeated motifs critical for ori C function. They are ___________ |
| A. | 9 mer and 18 mer |
| B. | 6 mer and 9 mer |
| C. | 9 mer and 13 mer |
| D. | 13 mer and 18 mer |
| Answer» D. 13 mer and 18 mer | |
| 19. |
How many origin of replication are present in the E. coli genome ___________ |
| A. | 1 |
| B. | 100 |
| C. | Uncountable |
| D. | None |
| Answer» B. 100 | |
| 20. |
The origin of replication is rich in __________ |
| A. | A, T |
| B. | G, C |
| C. | A, G |
| D. | C, T |
| Answer» B. G, C | |