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. |
Which of the following are the targets of bacterial toxins botulism and tetanus? |
| A. | Sar1 |
| B. | SNAREs |
| C. | Rabs |
| D. | ARF1 |
| Answer» C. Rabs | |
| 2. |
Synaptobrevin is a ______________ |
| A. | membrane vesicle |
| B. | lipid anchor |
| C. | t-SNARE |
| D. | v-SNARE |
| Answer» E. | |
| 3. |
t-SNAREs are present on the _____________________ |
| A. | budding vesicle |
| B. | transportation material |
| C. | target compartment |
| D. | tethering proteins |
| Answer» D. tethering proteins | |
| 4. |
Which state of the Rabs is the active state? |
| A. | GDP-bound |
| B. | GTP-bound |
| C. | Membrane-bound |
| D. | Lipid-bound |
| Answer» C. Membrane-bound | |
| 5. |
GTP-bound Rabs (G-proteins) associated with membranes by a __________ anchor. |
| A. | lipid |
| B. | protein |
| C. | carbohydrate |
| D. | ribonucleic acid |
| Answer» B. protein | |
| 6. |
Clathrin present on the clathrin-coated vesicles is a ______________ |
| A. | carbohydrate |
| B. | protein |
| C. | oligosaccharide |
| D. | enzyme |
| Answer» C. oligosaccharide | |
| 7. |
Retrieval signals, present on the C-terminus of ER resident proteins are captured by the receptors present on __________________ |
| A. | Clathrin-coated vesicles |
| B. | Golgi complex |
| C. | COPI-coated vesicles |
| D. | COPII-coated vesicles |
| Answer» D. COPII-coated vesicles | |
| 8. |
ARF1 is a _______ binding protein. |
| A. | carbohydrate |
| B. | GTP |
| C. | GDP |
| D. | ATP |
| Answer» C. GDP | |
| 9. |
The protein coated vesicle must release its components into the Cytosol before fusing with the target site. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Sar1 is a _______ |
| A. | carbohydrate |
| B. | glycolipid |
| C. | G-protein |
| D. | alkali |
| Answer» D. alkali | |
| 11. |
Glycosyltransferases are selected by CopII-coat proteins. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
COPI-coated vesicles move the materials in __________________ direction. |
| A. | retrograde |
| B. | anterograde |
| C. | radial |
| D. | lateral |
| Answer» B. anterograde | |
| 13. |
COPII-coated vesicles move the materials from ____________ to ____________ |
| A. | ERGIC, Golgi complex |
| B. | Golgi complex, ERGIC |
| C. | ER, Golgi complex |
| D. | Golgi complex, ER |
| Answer» D. Golgi complex, ER | |
| 14. |
Which molecule activates the formation of a transport vesicle? |
| A. | G-protein |
| B. | Lactose |
| C. | DNA helicase |
| D. | Inducer |
| Answer» B. Lactose | |
| 15. |
A protein coat of diameter ________ is present on the transport vesicles. |
| A. | 0.5-1 mm |
| B. | 0.5-1 nm |
| C. | 0.5-1 pm |
| D. | 0.5-1 m |
| Answer» E. | |