MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Mycobacterium tuberculosis inhibits the fusion of its phagosome with _________________ following phagocytosis. |
| A. | membrane |
| B. | lysosome |
| C. | endosome |
| D. | chromosome |
| Answer» C. endosome | |
| 2. |
‘Niemann–Pick type C disease’ is caused due to deficiency of a specific ________________ |
| A. | protein |
| B. | receptor |
| C. | ligand |
| D. | gene |
| Answer» B. receptor | |
| 3. |
Where do the materials ingested by endocytosis, reach after travelling through the late endosome? |
| A. | nucleus |
| B. | lysosome |
| C. | mitochondria |
| D. | early endosome |
| Answer» C. mitochondria | |
| 4. |
Receptors dissociate from their bound ligands as a result of ________________ |
| A. | high H+ concentration |
| B. | low H+ concentration |
| C. | high Cl– concentration |
| D. | low Cl– concentration |
| Answer» B. low H+ concentration | |
| 5. |
Transformation from an early to a late endosome is characterized by a decrease in ______________ |
| A. | mobility |
| B. | lipid content |
| C. | pH |
| D. | protein content |
| Answer» D. protein content | |
| 6. |
Late endosomes are located near the _____________ |
| A. | membrane |
| B. | nucleus |
| C. | mitochondria |
| D. | peroxisomes |
| Answer» C. mitochondria | |
| 7. |
Following internalization, vesicle–bound materials are transported to _________________ |
| A. | nucleus |
| B. | peroxisomes |
| C. | lysosomes |
| D. | endosomes |
| Answer» E. | |
| 8. |
Receptor down regulation leads to a decrease in the sensitivity of the cell towards further stimulation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Dynamin is a _____________________ |
| A. | adaptor molecule |
| B. | accessory protein |
| C. | integral membrane protein |
| D. | phospholipids |
| Answer» C. integral membrane protein | |
| 10. |
Which adaptor molecule operate in clathrin–mediated endocytosis? |
| A. | GGA |
| B. | AP1 |
| C. | AP2 |
| D. | Sar1 |
| Answer» D. Sar1 | |
| 11. |
A molecule of clathrin has a ______________ structure. |
| A. | triskelion |
| B. | spherical |
| C. | cylindrical |
| D. | polygonal |
| Answer» B. spherical | |
| 12. |
Receptor–mediated endocytosis (RME) leads to the formation of ___________ coated pits. |
| A. | clathrin |
| B. | lipid |
| C. | lysosome |
| D. | mannose |
| Answer» B. lipid | |
| 13. |
The process in which cell uptakes extracellular material bound to cell surface receptors is known as __________________ |
| A. | phagocytosis |
| B. | pinocytosis |
| C. | receptor–mediated endocytosis |
| D. | bulk–phase endocytosis |
| Answer» D. bulk–phase endocytosis | |
| 14. |
Which of the following is a type of endocytosis? |
| A. | Pinocytosis |
| B. | Phagocytosis |
| C. | Hemolysis |
| D. | Cytogenesis |
| Answer» B. Phagocytosis | |
| 15. |
Endocytosis and phagocytosis refer to the same process. |
| A. | True |
| B. | False |
| Answer» C. | |