MCQOPTIONS
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MCQOPTIONS
This section includes 24 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. |
In cancer telomerase activity __________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Plays no role |
| Answer» B. Decreases | |
| 2. |
Which alternate form of histone is seen in centromeric histones of humans? |
| A. | H2A.z |
| B. | SMC protein |
| C. | H1 |
| D. | CENP-A |
| Answer» E. | |
| 3. |
The centromere is A/T rich region. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
How many satellite sequence elements are present in yeast centromere? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 5. |
Centromeric DNA was initially defined in ___________ |
| A. | Bacteria |
| B. | Fungi |
| C. | Yeast |
| D. | Human |
| Answer» D. Human | |
| 6. |
The protein that binds to the spindle fibres are known as centromeric proteins. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The whole length of DNA is transcriptionally active. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
The extent of chromosome coiling in non – dividing cells is _________ |
| A. | Supercoiled |
| B. | Euchromatin |
| C. | Condensed |
| D. | Heterochromatin |
| Answer» C. Condensed | |
| 9. |
CENTROMERIC_DNA_WAS_INITIALLY_DEFINED_IN____________?$ |
| A. | Bacteria |
| B. | Fungi |
| C. | Yeast |
| D. | Human |
| Answer» D. Human | |
| 10. |
The centromere is A/T rich region ____$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
How_many_satellite_sequence_elements_are_present_in_yeast_centromere?$ |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 12. |
In cancer telomerase activity__________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Plays no role |
| Answer» B. Decreases | |
| 13. |
How does telomerase activity depend on age? |
| A. | Directly |
| B. | Inversely |
| C. | Remains the same |
| D. | Does not occur |
| Answer» E. | |
| 14. |
Which of the following nucleotides is rich I telomere of an organism? |
| A. | A, T |
| B. | T, G |
| C. | G, C |
| D. | C, A |
| Answer» D. C, A | |
| 15. |
Telomere is not related to __________ |
| A. | Maintenance |
| B. | Chromosome degradation |
| C. | Division |
| D. | Replication |
| Answer» D. Replication | |
| 16. |
Which_alternate_form_of_histone_is_seen_in_centromeric_histones_of_humans? |
| A. | H2A.z |
| B. | SMC protein |
| C. | H1 |
| D. | CENP-A |
| Answer» E. | |
| 17. |
The protein that binds to the spindle fibres are known as centromeric proteins ________? |
| A. | True |
| B. | False |
| Answer» C. | |
| 18. |
With respect to centromere which of the following is wrong? |
| A. | Constricted chromosomal region |
| B. | Holds the sister chromatids together |
| C. | Attaches to spindle fibres |
| D. | Facilitates even distribution |
| Answer» E. | |
| 19. |
The part that plays a critical role in even distribution of parental DNA during division is ___________ |
| A. | Telomere |
| B. | Centromere |
| C. | Spindle fibre |
| D. | Centrioles |
| Answer» C. Spindle fibre | |
| 20. |
At which phase do transcription ceases? |
| A. | Interphase |
| B. | Prophase |
| C. | S phase |
| D. | G phase |
| Answer» C. S phase | |
| 21. |
Why are chromosomes condensed? |
| A. | To facilitate accommodation |
| B. | Always condensed |
| C. | To facilitate cell division |
| D. | To facilitate distribution in daughter cells |
| Answer» E. | |
| 22. |
The whole length of DNA is transcriptionally active ___________ |
| A. | True |
| B. | False |
| Answer» C. | |
| 23. |
The extent of chromosome coiling in non – dividing cells is _________$ |
| A. | Supercoiled |
| B. | Euchromatin |
| C. | Condensed |
| D. | Heterochromatin |
| Answer» C. Condensed | |
| 24. |
Nucleosome was first described in 1974 by ___________ |
| A. | William Asbury |
| B. | Rosalind Franklin |
| C. | Roger Kornberg |
| D. | John Crick |
| Answer» D. John Crick | |