Super-Antigens & Toxins

Beschreibung

Medical Microbiology (Skin Infections) Quiz am Super-Antigens & Toxins, erstellt von gina_evans0312 am 06/02/2014.
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Quiz von gina_evans0312, aktualisiert more than 1 year ago
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Erstellt von gina_evans0312 vor mehr als 10 Jahre
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1

Zusammenfassung der Ressource

Frage 1

Frage
What is MHC?
Antworten
  • Presents antigens to T-cell on antigen presenting cells
  • Receives antigens from T-cells to antigen presenting cells

Frage 2

Frage
TCR's- T Cell Receptors that detect antigens presented by antigen presenting cells
Antworten
  • True
  • False

Frage 3

Frage
Presentation of antigens through MCH/TCR activates the T-cell
Antworten
  • True
  • False

Frage 4

Frage
How to Superantigens work?
Antworten
  • 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

Frage 5

Frage
Why are Superantigens dangerous
Antworten
  • They prevent T-Cell activation
  • The over-activate T-Cells
  • Which causes T-Cells to over-release cytokins, causing shock like symptoms

Frage 6

Frage
Exotoxins are secreted during cell lysis
Antworten
  • True
  • False

Frage 7

Frage
Which of the following are capable of producing Endotoxins?
Antworten
  • Gram +ve
  • Gram -ve

Frage 8

Frage
What happens to exotoxins?
Antworten
  • They're secreted during cell lysis
  • They secreted during normal cell function
  • They're expressed on the cell surface

Frage 9

Frage
Exotoxins tend to be produced by Gram +ve bacteria
Antworten
  • True
  • False
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