Super-Antigens & Toxins

Question 1 of 9

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What is MHC?

Select one of the following:

  • Presents antigens to T-cell on antigen presenting cells

  • Receives antigens from T-cells to antigen presenting cells

Question 2 of 9

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TCR's- T Cell Receptors that detect antigens presented by antigen presenting cells

Select one of the following:

  • True
  • False

Question 3 of 9

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Presentation of antigens through MCH/TCR activates the T-cell

Select one of the following:

  • True
  • False

Question 4 of 9

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How to Superantigens work?

Select one of the following:

  • Increase the presentation of antigens by MHC, super-stimulating the T-cells

  • Allows MHC/TCR binding without antigen present, super-stimulating the T-cells

  • Prevents T cell activation by destroying TCR's

Question 5 of 9

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Why are Superantigens dangerous

Select one or more of the following:

  • They prevent T-Cell activation

  • The over-activate T-Cells

  • Which causes T-Cells to over-release cytokins, causing shock like symptoms

Question 6 of 9

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Exotoxins are secreted during cell lysis

Select one of the following:

  • True
  • False

Question 7 of 9

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Which of the following are capable of producing Endotoxins?

Select one of the following:

  • Gram +ve

  • Gram -ve

Question 8 of 9

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What happens to exotoxins?

Select one of the following:

  • They're secreted during cell lysis

  • They secreted during normal cell function

  • They're expressed on the cell surface

Question 9 of 9

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Exotoxins tend to be produced by Gram +ve bacteria

Select one of the following:

  • True
  • False
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Super-Antigens & Toxins

gina_evans0312
Quiz by , created almost 3 years ago

Medical Microbiology (Skin Infections) Quiz on Super-Antigens & Toxins, created by gina_evans0312 on 06/02/2014.

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gina_evans0312
Created by gina_evans0312 almost 3 years ago
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