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MCQs

Total Questions : 93 | Page 9 of 10 pages
Question 81. Which messenger molecules are derived from arachidonic acid?
  1.    eicosanoids
  2.    terpenoids
  3.    corticoids
  4.    steroids
 Discuss Question
Answer: Option A. -> eicosanoids
Answer: (a).eicosanoids
Question 82. The process by which extracellular messages translate into intracellular changes is termed _________________
  1.    cell signaling
  2.    cell adhesion
  3.    signal transduction
  4.    cell transformation
 Discuss Question
Answer: Option C. -> signal transduction
Answer: (c).signal transduction
Question 83. Steroids are derived from ________________
  1.    estrogen
  2.    cholesterol
  3.    proteins
  4.    carbohydrates
 Discuss Question
Answer: Option B. -> cholesterol
Answer: (b).cholesterol
Question 84. G-protein coupled receptors are referred to as seven-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 85. The G-protein coupled receptors have their _____________________ outside the cell.
  1.    amino terminus
  2.    carboxyl terminus
  3.    alpha helices
  4.    beta helices
 Discuss Question
Answer: Option A. -> amino terminus
Answer: (a).amino terminus
Question 86. On the cytoplasmic site of GCPRs, the G-proteins bind to ___________________
  1.    amino-terminus
  2.    promoter region
  3.    second loop
  4.    third loop
 Discuss Question
Answer: Option D. -> third loop
Answer: (d).third loop
Question 87. The inactive conformation of a G-protein coupled receptor is stabilized by ____________________
  1.    covalent interactions
  2.    hydrogen binding
  3.    non-covalent interactions
  4.    ionic interactions
 Discuss Question
Answer: Option C. -> non-covalent interactions
Answer: (c).non-covalent interactions
Question 88. Which of the following is a stimulus for rhodopsin?
  1.    light
  2.    acidic pH
  3.    basic pH
  4.    neurotoxins
 Discuss Question
Answer: Option A. -> light
Answer: (a).light
Question 89. How many types of protein-tyrosine kinases are there?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 90. Bringing 2 kinase domains in close contact allows for ___________________
  1.    trans-autophosphorylation
  2.    cis-autophosphorylation
  3.    inactivation of one domain
  4.    inactivation of both domains
 Discuss Question
Answer: Option A. -> trans-autophosphorylation
Answer: (a).trans-autophosphorylation

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