Explore topic-wise MCQs in Cell Biology.

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
Discussion
2.

Which of the following is a calcium-binding protein?

A. cyclin
B. calmodulin
C. renin
D. kinetin
Answer» C. renin
Discussion
3.

Which ions activate cyclin-dependent kinases, following fertilization?

A. Ca<sup>2+</sup>
B. Mg<sup>2+</sup>
C. Fe<sup>3+</sup>
D. H<sup>+</sup>
Answer» B. Mg<sup>2+</sup>
Discussion
4.

Which receptors open up during the calcium-induced calcium release?

A. Ryanodine receptors
B. IP<sub>3</sub> receptors
C. ligand-gated channels
D. C<sub>2</sub>H<sub>2</sub> receptors
Answer» B. IP<sub>3</sub> receptors
Discussion
5.

Ryanodine is a _______________

A. protein
B. bacteria
C. alkaloid
D. steroid
Answer» D. steroid
Discussion
6.

How many types of calcium ion channels are present on ER membrane?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
7.

Upon fertilization, a wave of calcium release is observed throughout the cell.

A. True
B. False
Answer» B. False
Discussion
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
Discussion
9.

Calcium acts as an intracellular messenger.

A. True
B. False
Answer» B. False
Discussion
10.

Abnormal elevation of cytosolic Calcium can occur following a _____________

A. stroke
B. conception
C. tumor
D. epilepsy
Answer» B. conception
Discussion
11.

The concentration of Calcium in a resting cell is ___________

A. 10 M
B. 10<sup>-2</sup> M
C. 10<sup>-5</sup> M
D. 10<sup>-7</sup> M
Answer» E.
Discussion