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MCQs

Total Questions : 93 | Page 2 of 10 pages
Question 11. Nitric oxide is an intracellular messenger.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 12. Acetylcholine has the function of ________________________
  1.    muscle relaxation
  2.    fertilizing agent
  3.    promoting cell adhesion
  4.    promoting cell division
 Discuss Question
Answer: Option A. -> muscle relaxation
Answer: (a).muscle relaxation
Question 13. Nitric oxide is formed from which of the amino acid?
  1.    L-lysine
  2.    R-lysine
  3.    R-arginine
  4.    L-arginine
 Discuss Question
Answer: Option D. -> L-arginine
Answer: (d).L-arginine
Question 14. Binding of acetylcholine to outer surface of endothelial cells, signals _____________________
  1.    increase in cytosolic Ca²⁺ concentration
  2.    decrease cytosolic Ca²⁺ concentration
  3.    increase in acidity
  4.    increase in basicity
 Discuss Question
Answer: Option A. -> increase in cytosolic Ca²⁺ concentration
Answer: (a).increase in cytosolic Ca²⁺ concentration
Question 15. The diffusible agent produced by binding of acetylcholine to endothelial cells is __________________
  1.    vimentin
  2.    nitric oxide
  3.    hydrogen peroxide
  4.    hydrogen sulfide
 Discuss Question
Answer: Option B. -> nitric oxide
Answer: (b).nitric oxide
Question 16. Inactivation of which of the following leads to shrinkage of the nucleus?
  1.    lamin
  2.    tubulin
  3.    actin
  4.    gelsolin
 Discuss Question
Answer: Option A. -> lamin
Answer: (a).lamin
Question 17. The TNFR1 is a trimeric receptor.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 18. Which of the following is an extracellular messenger of apoptosis?
  1.    serine
  2.    tumor necrosis factor
  3.    ribozyme
  4.    translation inhibitor
 Discuss Question
Answer: Option B. -> tumor necrosis factor
Answer: (b).tumor necrosis factor
Question 19. Cytokines serve as _____________________ for apoptosis.
  1.    internal stimuli
  2.    external stimuli
  3.    inhibitors
  4.    substitutes
 Discuss Question
Answer: Option B. -> external stimuli
Answer: (b).external stimuli
Question 20. Which of the following is also termed as a death receptor?
  1.    TNFR1
  2.    TNFR2
  3.    TNFR3
  4.    TNFR4
 Discuss Question
Answer: Option A. -> TNFR1
Answer: (a).TNFR1

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