MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
Apoptotic bodies can be recognized by the presence of _____________________ on the surface. |
| A. | phosphatidylserine |
| B. | phosphatidylcholine |
| C. | phosphatidylinositol |
| D. | phosphatidyltyrosine |
| Answer» B. phosphatidylcholine | |
| 2. |
Which of the following is involved in the intrinsic pathway of apoptosis? |
| A. | cytochrome <em>a</em> |
| B. | cytochrome <em>b</em> |
| C. | cytochrome <em>c</em> |
| D. | cytochrome <em>d</em> |
| Answer» D. cytochrome <em>d</em> | |
| 3. |
Which family of proteins regulates the intrinsic pathway of apoptosis? |
| A. | Bcl-2 |
| B. | Bcl-4 |
| C. | Caspase-2 |
| D. | Caspase-8 |
| Answer» B. Bcl-4 | |
| 4. |
The last proteins to involve in the apoptotic pathway induced by TNF are ______________________ |
| A. | caspase-2 |
| B. | procaspase-2 |
| C. | caspase-8 |
| D. | procaspase-8 |
| Answer» E. | |
| 5. |
The TNFR1 is a trimeric receptor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following is also termed as a death receptor? |
| A. | TNFR1 |
| B. | TNFR2 |
| C. | TNFR3 |
| D. | TNFR4 |
| Answer» B. TNFR2 | |
| 7. |
Which of the following is an extracellular messenger of apoptosis? |
| A. | serine |
| B. | tumor necrosis factor |
| C. | ribozyme |
| D. | translation inhibitor |
| Answer» C. ribozyme | |
| 8. |
Cytokines serve as _____________________ for apoptosis. |
| A. | internal stimuli |
| B. | external stimuli |
| C. | inhibitors |
| D. | substitutes |
| Answer» C. inhibitors | |
| 9. |
Inactivation of which of the following leads to shrinkage of the nucleus? |
| A. | lamin |
| B. | tubulin |
| C. | actin |
| D. | gelsolin |
| Answer» B. tubulin | |
| 10. |
Inactivation of which of the following leads to detachment of the apoptotic cell? |
| A. | FAK |
| B. | PKB |
| C. | PKC |
| D. | RAF1 |
| Answer» B. PKB | |
| 11. |
The CED3 gene product in nematodes has homologous _______________ in mammals. |
| A. | kinases |
| B. | esterases |
| C. | caspases |
| D. | endonucleases |
| Answer» D. endonucleases | |
| 12. |
Apoptosis is programmed cell death. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
When was the term apoptosis coined? |
| A. | 1972 |
| B. | 1982 |
| C. | 1992 |
| D. | 2002 |
| Answer» B. 1982 | |
| 14. |
Which of the following type of cells recognize and kill the abnormal pathogen infected cells? |
| A. | Mast cells |
| B. | B-lymphocytes |
| C. | T-lymphocytes |
| D. | Neutrophils |
| Answer» D. Neutrophils | |