00
Correct
00
Incorrect
00 : 00 : 00
Session Time
00 : 00
Average Question Time ( Secs)
Retry this test Dashboard

  • Question 1 - Which immunological cells are predominant in the lymph node (almost 98 % residence)?...

    Correct

    • Which immunological cells are predominant in the lymph node (almost 98 % residence)?

      Your Answer: Lymphocytes

      Explanation:

      Lymph nodes are a lymphoid organ mostly consisting of lymphocytes: B cells in the cortex from where they mature and proliferate and T cells in the paracortex. The medulla is also composed of lymphocytes and macrophages.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      9.3
      Seconds

  • Question 2 - Arachidonic acid is converted to: ...

    Correct

    • Arachidonic acid is converted to:

      Your Answer: Prostaglandin H2

      Explanation:

      The enzymes cyclooxygenase-1 and -2 (i.e. prostaglandin G/H synthase 1 and 2 {PTGS1 and PTGS2}) metabolize arachidonic acid to Prostaglandin G2 and prostaglandin H2.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      10.8
      Seconds

  • Question 3 - HLA class III genes encode for ...

    Correct

    • HLA class III genes encode for

      Your Answer: Complement

      Explanation:

      HLAs corresponding to MHC class III encode components of the complement system.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      17
      Seconds

  • Question 4 - Which cells produce the immunoglobulin proteins involved in mediating humoral immunity? ...

    Incorrect

    • Which cells produce the immunoglobulin proteins involved in mediating humoral immunity?

      Your Answer: Memory B cell

      Correct Answer: Differentiated forms of B lymphocytes known as plasma cells

      Explanation:

      After the B cells have been activated by a certain antigens, they transform into plasma cells. These plasma cells are responsible for the generation of antibodies (or immunoglobulins Ig) which are also known as regulators of humoral immunity. There are fives classes of Ig: IgA, IgG, IgM, IgE and IgD

    • This question is part of the following fields:

      • Immunology
      • Medicine
      50.3
      Seconds

  • Question 5 - What is the name of the area that indicates the site of active...

    Incorrect

    • What is the name of the area that indicates the site of active B lymphocyte proliferation?

      Your Answer: Cortex

      Correct Answer: Germinal centre

      Explanation:

      The cortex of the lymph node consists of the lymphoid nodules and sinusoids and posses a germinal centre from which B cells proliferate.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      8.8
      Seconds

  • Question 6 - The process whereby bacterial products interact with plasma factors and cells to produce...

    Correct

    • The process whereby bacterial products interact with plasma factors and cells to produce agents that attract neutrophils to an infected area is called:

      Your Answer: Chemotaxis

      Explanation:

      During an inflammatory process many cytokines are produced that act as chemokines to attract neutrophils to the site of inflammation. These include bacterial products, IL-8, C5a and LTB4.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      22
      Seconds

  • Question 7 - Cells mediating innate immunity include: ...

    Correct

    • Cells mediating innate immunity include:

      Your Answer: Natural killer cells

      Explanation:

      Natural killer cells have features of both innate and adaptive immunity. They play an important part in defence against tumours and viruses. They are non specific and do not generate immunological memory

    • This question is part of the following fields:

      • Immunology
      • Medicine
      7.4
      Seconds

  • Question 8 - In both innate and humoral immunity, receptors involved recognize: ...

    Correct

    • In both innate and humoral immunity, receptors involved recognize:

      Your Answer: The shape of the antigen

      Explanation:

      Antigen receptors recognize the shape of the antigen. They identify specific epitopes and are found on T cells.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      6.1
      Seconds

  • Question 9 - The cytoplasmic form of superoxide dismutase [SOD] contains: ...

    Correct

    • The cytoplasmic form of superoxide dismutase [SOD] contains:

      Your Answer: Zn and Cu

      Explanation:

      The cytoplasmic form of superoxide dismutase [SOD] contains zinc and copper

    • This question is part of the following fields:

      • Immunology
      • Medicine
      8.5
      Seconds

  • Question 10 - Tumour necrosis factor is a cytokine. What is its major function? ...

    Correct

    • Tumour necrosis factor is a cytokine. What is its major function?

      Your Answer: Promotion of inflammation

      Explanation:

      Tumour necrosis factor (TNF) is a cytokine that has a wide variety of functions. It can cause cytolysis of certain tumour cell lines; it is involved in the induction of cachexia; it is a potent pyrogen, causing fever by direct action or by stimulation of interleukin-1 secretion; it can stimulate cell proliferation and induce cell differentiation under certain conditions.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      22.5
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Immunology (8/10) 80%
Medicine (8/10) 80%
Passmed
Retry this test Dashboard