MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following cellular RNA is not dependent on RanGTP during transport outside nucleus? |
| A. | tRNA |
| B. | rRNA |
| C. | mRNA |
| D. | snRNA |
| Answer» D. snRNA | |
| 2. |
Export of proteins with exportin CRM1 can be inhibited by ___________ |
| A. | Leptomycin A |
| B. | Leptomycin B |
| C. | Leptomycin D |
| D. | Leptomycin H |
| Answer» C. Leptomycin D | |
| 3. |
Export of molecules from inside the nucleus to the cytoplasm needs hydrolysis ________ |
| A. | 1 GTP |
| B. | 1 ATP |
| C. | 2 GTPs |
| D. | 3 GTPs |
| Answer» B. 1 ATP | |
| 4. |
The import cycle of cargo or molecule inside the nucleus requires the hydrolysis of ___ |
| A. | 1 GTP |
| B. | 1 ATP |
| C. | 2 GTPs |
| D. | 3 GTPs |
| Answer» D. 3 GTPs | |
| 5. |
Which of the following displaces Importin-alpha from the cargo transported inside the nucleus? |
| A. | Impotin-beta |
| B. | RanGTP |
| C. | CAS |
| D. | RanGTPase |
| Answer» D. RanGTPase | |
| 6. |
Which of the following first binds to the NLS protein sequence? |
| A. | Importin-alpha |
| B. | Importin-beta |
| C. | CAS protein |
| D. | NLS detecting protein |
| Answer» B. Importin-beta | |
| 7. |
Why are red blood cells anucleated? |
| A. | Presence of nucleus leads to heavier cells that cannot flow in blood stream |
| B. | Absence of nucleus leads to increased space for haemoglobin that carries molecular oxygen |
| C. | Presence of nucleus leads to increased proliferation of RBCs which harms the body |
| D. | All of the mentioned |
| Answer» C. Presence of nucleus leads to increased proliferation of RBCs which harms the body | |
| 8. |
Which of the following human cells are multinucleated? |
| A. | Myocytes |
| B. | Erythrocytes |
| C. | Megakaryocytes |
| D. | None of the mentioned |
| Answer» B. Erythrocytes | |
| 9. |
The ability of importins and exportins to transport molecules in and out of the nucleoporins is regulated by ______________ |
| A. | ATPases |
| B. | GTPases |
| C. | AMPases |
| D. | Both ATPases and GTPases |
| Answer» C. AMPases | |
| 10. |
Processing of mRNA includes __________ |
| A. | 5 capping, 3 polyadenylation and RNA splicing |
| B. | 3 capping, 5 polyadenylation and RNA splicing |
| C. | 5 capping and 3 polyadenylation |
| D. | 5 capping and RNA splicing |
| Answer» B. 3 capping, 5 polyadenylation and RNA splicing | |