Pathogenesis of Bacterial Infection I: Normal Flora
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Questions and Answers

What is the term for microorganisms that colonize people for hours to weeks but do not establish themselves permanently?

  • Commensals
  • Pathogens
  • Transient flora (correct)
  • Resident flora
  • Which term is used to describe the microorganisms that inhabit the human body and are usually harmless and beneficial?

  • Commensals (correct)
  • Antibiotics
  • Pathogens
  • Toxins
  • Where is the resident flora usually found in the human body?

  • Eye
  • Central nervous system
  • Intestinal tract (correct)
  • Blood
  • What beneficial function do resident flora in the intestine serve?

    <p>Synthesizing vitamins K and B</p> Signup and view all the answers

    Apart from synthesizing vitamins, what other function do resident flora in the intestine serve?

    <p>Aiding in digestion and absorption of nutrients</p> Signup and view all the answers

    Which of the following is NOT a portal of entry for infectious diseases?

    <p>Muscular system</p> Signup and view all the answers

    How do normal flora suppress the growth of many pathogenic bacteria and fungi?

    <p>By competing for essential nutrients and receptors</p> Signup and view all the answers

    What is the primary role of bacterial biofilms in human infections?

    <p>They make it difficult to treat infections as they are persistent</p> Signup and view all the answers

    Which primary host defense do bacteria with an outer polysaccharide capsule have a better chance of surviving?

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

    Under certain conditions, how can normal flora become pathogenic?

    <p>By decreasing in number due to antibiotics</p> Signup and view all the answers

    What is the first step of the infectious process according to the text?

    <p>Entry of the microorganism into the host</p> Signup and view all the answers

    What is the mode of infectious disease transmission involving arthropod bites?

    <p>Indirect vector transmission</p> Signup and view all the answers

    What is the main role of attachment between microbe and host tissue mainly by the aid of pili?

    <p>Facilitating colonization of bacteria at the site of adherence</p> Signup and view all the answers

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