Abo_shousha_dentistry_exam_2

6 Questions

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Abo_shousha_dentistry_exam_2

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Questions and Answers
  • 1. 
    What is true in relation to drug receptors
    • A. 

      All drugs act through specific receptors

    • B. 

      All drug receptors are located on the surface of the target cells

    • C. 

      Agonists induce a conformational change in the receptor

    • D. 

      All drugs act through specific enzyme

  • 2. 
    In the following figure, the drug with hight efficacy is
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 3. 
    In the following figure, the drug with the least potency is:
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 4. 
    Which of the following receptors represent the fastest signal transmission:
    • A. 

      Tyrosine protein kinase receptor

    • B. 

      Gene expression regulating receptor

    • C. 

      Intrinsic ion channel containing receptor

    • D. 

      G protein coupled receptor

  • 5. 
    ‘Drug efficacy’ refers to:
    • A. 

      The range of diseases in which the drug is beneficial

    • B. 

      The maximal intensity of response that can be produced by the drug

    • C. 

      The dose of the drug needed to produce half maximal effect

    • D. 

      The dose of the drug needed to produce therapeutic effect

  • 6. 
    The antagonism between adrenaline and histamine is called ‘physiological antagonism’ because:
    • A. 

      Both are physiologically present in the body

    • B. 

      They act on physiological receptors

    • C. 

      Both affect many physiological processes

    • D. 

      They have opposite physiological effects