MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Calmodulin has low affinity for _____________ |
| A. | magnesium ions |
| B. | iodine |
| C. | non-stimulated cells |
| D. | stimulated cells |
| Answer» D. stimulated cells | |
| 2. |
Which of the following is a calcium-binding protein? |
| A. | cyclin |
| B. | calmodulin |
| C. | renin |
| D. | kinetin |
| Answer» C. renin | |
| 3. |
Which ions activate cyclin-dependent kinases, following fertilization? |
| A. | Ca2+ |
| B. | Mg2+ |
| C. | Fe3+ |
| D. | H+ |
| Answer» B. Mg2+ | |
| 4. |
Which receptors open up during the calcium-induced calcium release? |
| A. | Ryanodine receptors |
| B. | IP3 receptors |
| C. | ligand-gated channels |
| D. | C2H2 receptors |
| Answer» B. IP3 receptors | |
| 5. |
Ryanodine is a _______________ |
| A. | protein |
| B. | bacteria |
| C. | alkaloid |
| D. | steroid |
| Answer» D. steroid | |
| 6. |
How many types of calcium ion channels are present on ER membrane? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 7. |
Upon fertilization, a wave of calcium release is observed throughout the cell. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Fura-2 is an example of __________________ |
| A. | fluorescent molecule |
| B. | cell surface receptor |
| C. | cell surface antigen |
| D. | oncogene |
| Answer» B. cell surface receptor | |
| 9. |
Calcium acts as an intracellular messenger. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Abnormal elevation of cytosolic Calcium can occur following a _____________ |
| A. | stroke |
| B. | conception |
| C. | tumor |
| D. | epilepsy |
| Answer» B. conception | |
| 11. |
The concentration of Calcium in a resting cell is ___________ |
| A. | 10 M |
| B. | 10-2 M |
| C. | 10-5 M |
| D. | 10-7 M |
| Answer» E. | |