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MCQs

Total Questions : 93 | Page 3 of 10 pages
Question 21. Cell signaling is a process by which cells communicate.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 22. Paracrine messenger molecules are usually ________________
  1.    large
  2.    stable
  3.    unstable
  4.    amphoteric
 Discuss Question
Answer: Option C. -> unstable
Answer: (c).unstable
Question 23. Protein kinases and phosphatases act by altering ______________ of the signaling proteins.
  1.    basicity
  2.    conformation
  3.    acidity
  4.    size
 Discuss Question
Answer: Option B. -> conformation
Answer: (b).conformation
Question 24. Endocrine messengers are also called ___________________
  1.    hormones
  2.    receptors
  3.    antibody
  4.    antigen
 Discuss Question
Answer: Option A. -> hormones
Answer: (a).hormones
Question 25. The primary messenger molecules bind to the transmembrane receptors.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 26. A somatic mutation is present in all of the individual’s body cells.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 27. Epinephrine causes an increase in ____________________
  1.    blood glucose levels
  2.    surface receptors
  3.    rhodopsin pigments
  4.    mast cells
 Discuss Question
Answer: Option A. -> blood glucose levels
Answer: (a).blood glucose levels
Question 28. The Cholera toxin produced by Vibrio cholera exerts its effect by _____________________
  1.    modifying G-protein
  2.    modifying primary messengers
  3.    modifying effectors
  4.    modifying receptors
 Discuss Question
Answer: Option A. -> modifying G-protein
Answer: (a).modifying G-protein
Question 29. The Protein-tyrosine kinases phosphorylate the ______________ residues.
  1.    adenine
  2.    cytosine
  3.    tyrosine
  4.    chymosin
 Discuss Question
Answer: Option C. -> tyrosine
Answer: (c).tyrosine
Question 30. The Kaposi’s sarcoma is caused by ____________________
  1.    Herpes virus
  2.    Adeno virus
  3.    Human immunodeficiency virus
  4.    Retro virus
 Discuss Question
Answer: Option A. -> Herpes virus
Answer: (a).Herpes virus

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