Infection and Disease: Host-Microbe Relationship and Stages of Infection
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Infection and Disease: Host-Microbe Relationship and Stages of Infection

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Questions and Answers

What is the term for a systemic infection caused by the multiplication of pathogens in the blood?

  • Septicemia (correct)
  • Bacteremia
  • Viremia
  • Toxemia
  • Which type of infection appears rapidly with severe symptoms and then vanishes rapidly?

  • Primary infection
  • Acute infection (correct)
  • Chronic infection
  • Subclinical infection
  • What is the term for the presence of toxins in the blood?

  • Viremia
  • Septicemia
  • Toxemia (correct)
  • Bacteremia
  • In Koch's postulates, what must happen to the pathogen from the pure culture?

    <p>It must cause disease in a healthy host</p> Signup and view all the answers

    What type of infection usually has less severe symptoms but persists for long periods of time?

    <p>Chronic infection</p> Signup and view all the answers

    Which term refers to the presence of viruses in the blood?

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

    What type of forces or interactions are involved in nonspecific adhesion?

    <p>Atomic and molecular vibrations</p> Signup and view all the answers

    How is specific adhesion characterized?

    <p>Lock-and-key interaction between complementary molecules</p> Signup and view all the answers

    Where do human pathogens usually colonize?

    <p>Digestive tract</p> Signup and view all the answers

    What process may be aided by invasins produced by pathogens?

    <p>Breakdown of host cell membrane</p> Signup and view all the answers

    How do pathogens evade host defense mechanisms?

    <p>Stimulate phagocytic engulfment</p> Signup and view all the answers

    Which type of attraction is involved in nonspecific adhesion?

    <p>Brownian movement</p> Signup and view all the answers

    What is the main difference between mutualism and commensalism?

    <p>Both organisms benefit in mutualism, while only one organism benefits in commensalism.</p> Signup and view all the answers

    Which type of symbiotic relationship involves one organism benefiting while the other is harmed slightly or may be killed?

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

    What term is used to describe a microorganism capable of causing disease when the balance between normal flora and human host is interrupted?

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

    Which type of microbes would typically be considered opportunistic pathogens?

    <p>Normal flora</p> Signup and view all the answers

    What is the main characteristic that distinguishes a parasite from other types of organisms?

    <p>It causes disease in the host organism.</p> Signup and view all the answers

    In which type of symbiotic relationship can one organism hamper or prevent the growth/survival of another without being affected itself?

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

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