A(n) ________ is a damage or injury to a host organism that impairs its function.

A(n) ________ is a damage or injury to a host organism that impairs its function.
 
  A) trauma
  B) infection
  C) disease
  D) transmission

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The human gastrointestinal tract includes all of the following EXCEPT the
 
  A) small intestine.
  B) stomach.
  C) large intestine.
  D) epiglottis.

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Which of the following is a way to prevent attenuation and maintain virulence in a bacterium?
 
  A) laboratory subculture
  B) animal passage
  C) polymerase chain reaction (PCR)
  D) antibiotic therapy

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________ in saliva cleaves glycosidic linkages in peptidoglycan present in bacterial cell walls, weakening the wall and causing cell lysis.
 
  A) Mucus
  B) Lysozyme
  C) Fibrin
  D) Lipid A

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The collective term for the organisms living on or in the human body is
 
  A) normal microbial flora.
  B) fomite flora.
  C) transient microbial flora.
  D) pathogenic flora.