Quiz: Can You Really Pass This Difficult Microbiology Test?

50 Questions | Total Attempts: 493

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Microbiology Quizzes & Trivia

There are a lot of quizzes that one can say are hard, but for sure this takes the cake. The quiz below is made up of some complex microbiology questions that most students have a difficult time tackling. Can you pass what is known as the difficult microbiology test ever? Why don’t you give it a shot and get to find out? All the best!


Questions and Answers
  • 1. 
    The condition in the host that results from pathogenic parasitic organism growing and multiplying within or on the host is called  
    • A. 

      An infection.

    • B. 

      An infectious disease.

    • C. 

      Pathogenesis

    • D. 

      All of these

  • 2. 
    • A. 

      the number of organisms present in or on the host. 


    • B. 

      The virulence of the organism.

    • C. 

      The host's defenses.

    • D. 

      all of the choices

  • 3. 
    Which of the following has no effect on the outcome of the host-parasite relationship?  
    • A. 

      The number of parasites on or in the host

    • B. 

      The virulence of the parasite 


    • C. 

      The defenses of the host

    • D. 

      All of these have an effect on the outcome of the host-parasite relationship.

  • 4. 
    Any organism that can cause disease in the host after direct interaction is a  
    • A. 

      Focal pathogen.

    • B. 

      Opportunistic pathogen.

    • C. 

      Primary pathogen. 


    • D. 

      secondary pathogen.

  • 5. 
     An __________ pathogen can cause disease in a host with impaired resistance.  
  • 6. 
    If a symbiont either harms or lives at the expense of another organism, the relationship is called  
    • A. 

      Symbiosis

    • B. 

      Parasitism

    • C. 

      Commensalisms

    • D. 

      Pathogenicity

  • 7. 
    An organism other than a human that is infected with a parasitic organism that can also infect humans is called a(n) ________ host.  
    • A. 

      Reservoir

    • B. 

      Endoparasite

    • C. 

      Transfer

    • D. 

      Intermediate

  • 8. 
    Which of the following is required of a pathogen to possess in order for it to be successful at causing infectious disease?  
    • A. 

      Initially be transported to the host

    • B. 

      Be able to exit the host

    • C. 

      Ability to adhere to, colonize, or invade the host

    • D. 

      Ability to damage the host 


    • E. 

      All of the choices

  • 9. 
    An inanimate object that may be contaminated with a pathogen is called a  
    • A. 

      Vector

    • B. 

      Fomite

    • C. 

      Zoonoses

    • D. 

      None of the choices

  • 10. 
    Which of the following is a facultative intracellular pathogen?  
    • A. 

      Viruses

    • B. 

      Brucella abortus

    • C. 

      Rickettsia

    • D. 

      All of the choices

  • 11. 
    Transfer of pathogens from host to environment and then to another host are said to be transmitted _________.  
  • 12. 
    A ________________ infection is a disease caused by a parasitic organism that is normally found in animals other than humans.  
  • 13. 
    The presence of viruses in the blood is called _______________.  
  • 14. 
    A __________ is an organism that transfers pathogens from one host to another.  
  • 15. 
    Vector-borne transmission can be either external or internal. In external (mechanical) transmission, the pathogen is carried  
    • A. 

      On a fomite.

    • B. 

      On the body surface of a vector.

    • C. 

      Within the vector.

    • D. 

      All of the choices

  • 16. 
    Inanimate materials involved in pathogen transmission are called reservoirs.  
    • A. 

      True

    • B. 

      False

  • 17. 
    Pathogens can penetrate to deeper tissues by producing specific virulence structures or enzymes.  These products include all of the following except  
    • A. 

      Collagenase

    • B. 

      Ribosomes

    • C. 

      Hyaluronidase

    • D. 

      Leukocidins

  • 18. 
    Bacteria within biofilms exchange  
    • A. 

      Plasmids

    • B. 

      Quorum-sensing molecules

    • C. 

      Nutrients

    • D. 

      All of the choices

  • 19. 
    Many types of bacteria are only _________ when dispersing from more stable and heterogeneous communities known as biofilms.  
  • 20. 
    Virulence may be measured experimentally at the host level by the __________ __________ __________, which measures the number of pathogens that kills 50% of an experimental group of hosts within a specified amount of time.  (3 words)  
  • 21. 
    The term __________ refers to the degree or intensity of pathogenicity.  
  • 22. 
     Because LPS is bound to the surface of bacteria, it is called a(n) __________.  
  • 23. 
    A neutralizing antibody against a toxin is called a(n) __________.  
  • 24. 
    Exotoxins can be denatured by iodine to form __________ which are useful in vaccines.  
  • 25. 
     The capacity of an organism to produce a toxin is called __________.