Give an example of a situation where one of Koch’s postulates does not work.  Refer to one specific postulate and one specific infectious disease and explain how the postulate does not hold true for this particular infectious disease.  

  Human immunodeficiency virus (HIV) spreads directly from person to person via intimate contact. HIV exhibits  

  The difference between an emerging and a reemerging disease is that emerging diseases__________, and reemerging diseases__________.  

  During photosynthesis, ATP is produced via  

  Which of the following diseases is caused by a helminth?  

  A microbe that is multicellular and photosynthetic, and has cells 50 μm in size, would most likely be a(n)  

  Within three hours of attending the church carnival, Maya and her family are all vomiting uncontrollably. Which of the following organisms have they likely ingested?  

  What factor is most responsible for both the very young and the very old being most susceptible to infectious diseases?  

  The organism shown in the figure below is a(n)  

  Many enteric pathogens are transmitted through