Understanding Disease and Infectious Disease Definitions
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Questions and Answers

What is the term for a microorganism that is generally harmless but can cause disease when it gains access to other sites or tissues?

  • Obligate pathogen
  • Symbiotic
  • Commensal
  • Opportunistic pathogen (correct)
  • Which of the following terms refers to the capacity of a microbial species to produce disease?

  • Pathogenicity (correct)
  • Virulence
  • Infectivity
  • Saprophytism
  • What is the type of relationship in which one organism benefits and the other is unaffected?

  • Commensalism (correct)
  • Mutualism
  • Symbiosis
  • Parasitism
  • Which term does not describe a type of host-parasite relationship?

    <p>Pathogenicity</p> Signup and view all the answers

    What is the term for living on or within another living organism?

    <p>Parasitism</p> Signup and view all the answers

    What is the term for the infectious dose required to cause disease in 50% of inoculated test animals?

    <p>ID50</p> Signup and view all the answers

    Which virulence factor allows pathogens to attach to host tissue?

    <p>Adherence</p> Signup and view all the answers

    Which of the following virulence factors enables pathogens to destroy host cells?

    <p>Hyaluronidase</p> Signup and view all the answers

    Which of the following types of diseases is typically restricted to a specific geographical area?

    <p>Endemic diseases</p> Signup and view all the answers

    Which of the following pathogens has the highest ID50 value?

    <p>Vibrio cholerea</p> Signup and view all the answers

    Which of the following virulence factors contributes to the evasion of host immune responses?

    <p>Capsule</p> Signup and view all the answers

    What is the term for the ability of a microbe to cause disease?

    <p>Pathogenicity</p> Signup and view all the answers

    A disease present in a greater than usual percentage of a specific population is known as a:

    <p>Epidemic</p> Signup and view all the answers

    What is the term for a disease that is normally found in a certain percentage of a population?

    <p>Endemic</p> Signup and view all the answers

    The degree of pathogenicity is known as:

    <p>Virulence</p> Signup and view all the answers

    A disease affecting a large geographical area, often on a global scale, is known as a:

    <p>Pandemic</p> Signup and view all the answers

    The factors produced by a microorganism that induce pathology in a host are called:

    <p>Virulence Factors</p> Signup and view all the answers

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