MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which factors lead to disassociation of the ribosomal subunits? |
| A. | RRF and Ef-G |
| B. | IF1 and IF2 |
| C. | Rf1 and RRF |
| D. | IF-1 and IF-3 |
| Answer» E. | |
| 2. |
Which factor or factors lead to the ultimate disassembly of the ribosomal complex? |
| A. | RF1 and RF3 |
| B. | RF3 and RRF |
| C. | RRF and EF-G |
| D. | RF2 and EF-G |
| Answer» D. RF2 and EF-G | |
| 3. |
Binding of RF3.GTP to the ribosome helps in release of the ____________ |
| A. | Peptide |
| B. | Release factor 1 |
| C. | tRNA |
| D. | Ribosome |
| Answer» C. tRNA | |
| 4. |
Which of these factors can recognize the UAA stop codon? |
| A. | RF1 |
| B. | RF3 |
| C. | RRF |
| D. | Ef-G |
| Answer» B. RF3 | |
| 5. |
BINDING_OF_RF3.GTP_TO_THE_RIBOSOME_HELPS_IN_RELEASE_OF_THE_____________?$ |
| A. | Peptide |
| B. | Release factor 1 |
| C. | tRNA |
| D. | Ribosome |
| Answer» C. tRNA | |
| 6. |
WHICH_OF_THESE_FACTORS_CAN_RECOGNIZE_THE_UAA_STOP_CODON??$ |
| A. | RF1 |
| B. | RF3 |
| C. | RRF |
| D. | Ef-G |
| Answer» B. RF3 | |
| 7. |
Which factors lead to disassociation of the ribosomal subunits?$ |
| A. | RRF and Ef-G |
| B. | IF1 and IF2 |
| C. | Rf1 and RRF |
| D. | IF-1 and IF-3 |
| Answer» E. | |
| 8. |
Which factor or factors lead to the ultimate disassembly of the ribosomal complex?$ |
| A. | RF1 and RF3 |
| B. | RF3 and RRF |
| C. | RRF and EF-G |
| D. | RF2 and EF-G |
| Answer» D. RF2 and EF-G | |
| 9. |
How many factors play a role in termination of translation? |
| A. | 1 |
| B. | 3 |
| C. | 5 |
| D. | 7 |
| Answer» D. 7 | |
| 10. |
If a peptide is 160 amino acids long, How many GTP and ATP molecules does it use for elongation? |
| A. | 318 GTP + 160 ATP |
| B. | 478 GTP + 160 ATP |
| C. | 320 GTP+ 320 ATP |
| D. | 478 GTP+ 320 ATP |
| Answer» B. 478 GTP + 160 ATP | |
| 11. |
According to the hybrid state model, if we consider the hybrid state of a tRNA such that its base is bound to the P site of 30S subunit, where will its head be bound? |
| A. | A site of 50S |
| B. | P site of 50S |
| C. | E site of 50S |
| D. | Unbound |
| Answer» D. Unbound | |
| 12. |
What is the rate of translation in prokaryotes under adequate conditions? |
| A. | 10 amino acid per second |
| B. | 20 amino acid per second |
| C. | 30 amino acid per second |
| D. | 40 amino acid per second |
| Answer» C. 30 amino acid per second | |
| 13. |
The E site of the ribosome has a high affinity for___________ |
| A. | Peptide bound tRNA |
| B. | Ester linked tRNA |
| C. | Acylated tRNA |
| D. | Deacylated tRNA |
| Answer» E. | |
| 14. |
After the Ef-G cycle the A site_________ |
| A. | Houses peptide bound tRNA |
| B. | Amino acid bound tRNA |
| C. | Empty |
| D. | Uncharged trNA |
| Answer» D. Uncharged trNA | |
| 15. |
EF-Tu GTP complex is ____________ |
| A. | Very unstable |
| B. | Unstable |
| C. | Stable |
| D. | Very stable |
| Answer» E. | |
| 16. |
Which of the elongation factor binds to amino acyl tRNA? |
| A. | Ef-Tu |
| B. | Ef-Ts |
| C. | Ef-G |
| D. | GDP |
| Answer» B. Ef-Ts | |