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  • Question 1 - Cell mediating innate immunity include: ...

    Incorrect

    • Cell mediating innate immunity include:

      Your Answer: Plasma cells

      Correct Answer: Natural killer cells

      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
      13.9
      Seconds

  • Question 2 - Complement system help dispose waste products after which natural process? ...

    Incorrect

    • Complement system help dispose waste products after which natural process?

      Your Answer: Ischaemia

      Correct Answer: Apoptosis

      Explanation:

      The complement system is a part of the immune system that enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism or apoptosis. It is part of the innate immune system.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      4.9
      Seconds

  • Question 3 - The predominant site in the lymph node where B lymphocytes are found is:...

    Incorrect

    • The predominant site in the lymph node where B lymphocytes are found is:

      Your Answer: It is found equally in all parts of the lymph node

      Correct Answer: Cortex

      Explanation:

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

    • This question is part of the following fields:

      • Immunology
      • Medicine
      7.1
      Seconds

  • Question 4 - Which immunological cells are predominant in the lymph node (almost 98 % residence)?...

    Incorrect

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

      Your Answer: Basophils

      Correct 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
      3.6
      Seconds

  • Question 5 - 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
      3
      Seconds

  • Question 6 - What is the function of cytotoxic T cells? ...

    Correct

    • What is the function of cytotoxic T cells?

      Your Answer: Kill by inserting perforins and by initiating apoptosis

      Explanation:

      Cytotoxic T cells, once activated, approach the infected cell, insert perforins and release granzymes inducing apoptosis.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      9.9
      Seconds

  • Question 7 - Neutrophils are key components of the innate immune system. They contain numerous primary...

    Correct

    • Neutrophils are key components of the innate immune system. They contain numerous primary and secondary granules involved in killing and digesting microorganisms. With regard to defensins, they are:

      Your Answer: Naturally occurring cysteine-rich antibacterial and antifungal polypeptides

      Explanation:

      Cationic antimicrobial peptides, including defensins, cathelicidins, and thrombocidins, provide important initial defences against invading microbes. These peptides bind the bacterial membrane and form pores, killing the bacterium by hypo-osmotic lysis.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      22.2
      Seconds

  • Question 8 - Which cell type functions as the critical bridge between innate and adaptive immune...

    Correct

    • Which cell type functions as the critical bridge between innate and adaptive immune systems, by activating naïve T lymphocytes?

      Your Answer: Dendritic cells

      Explanation:

      Dendritic cells are antigen presenting cells. They express class II MHC and T cell co-stimulatory molecules. They bind antigens and present them to native T cells and in the process activate the specific T cell against that antigen.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      9.6
      Seconds

  • Question 9 - 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
      2.6
      Seconds

  • Question 10 - 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: Helper T cells

      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
      3
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Immunology (10/10) 100%
Medicine (10/10) 100%
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