Cell Signaling And Signal Transduction(Cell Biology ) Questions and answers for exam Preparation

Question 1. Abnormal elevation of cytosolic Calcium can occur following a _____________

stroke
conception
tumor
epilepsy

Explanation:-

Answer: Option A. -> stroke
Answer: (a).stroke

Question 2. The concentration of Calcium in a resting cell is ___________

10 M
10¯² M
10¯⁵ M
10¯⁷ M

Explanation:-

Answer: Option D. -> 10¯⁷ M
Answer: (d).10¯⁷ M

Question 3. Calcium acts as an intracellular messenger.

True
False
May be True or False
Can't say

Explanation:-

Answer: Option A. -> True
Answer: (a).True

Question 4. Fura-2 is an example of __________________

fluorescent molecule
cell surface receptor
cell surface antigen
oncogene

Explanation:-

Answer: Option A. -> fluorescent molecule
Answer: (a).fluorescent molecule

Question 5. Upon fertilization, a wave of calcium release is observed throughout the cell.

True
False
May be True or False
Can't say

Explanation:-

Answer: Option A. -> True
Answer: (a).True

Question 6. How many types of calcium ion channels are present on ER membrane?

1
2
3
4

Explanation:-

Answer: Option B. -> 2
Answer: (b).2

Question 7. Which receptors open up during the calcium-induced calcium release?

Ryanodine receptors
IP₃ receptors
ligand-gated channels
C₂H₂ receptors

Explanation:-

Answer: Option A. -> Ryanodine receptors
Answer: (a).Ryanodine receptors

Question 8. Ryanodine is a _______________

protein
bacteria
alkaloid
steroid

Explanation:-

Answer: Option C. -> alkaloid
Answer: (c).alkaloid

Question 9. Which ions activate cyclin-dependent kinases, following fertilization?

Ca²⁺
Mg²⁺
Fe³⁺
H⁺

Explanation:-

Answer: Option A. -> Ca²⁺
Answer: (a).Ca²⁺

Question 10. Which of the following is a calcium-binding protein?

cyclin
calmodulin
renin
kinetin

Explanation:-

Answer: Option B. -> calmodulin
Answer: (b).calmodulin