Understanding Biofilms in the Human Body
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Questions and Answers

What is the role of biofilms in the lining of the intestinal and respiratory mucosa?

  • Warding off infections (correct)
  • Contributing to dental diseases
  • Causing infections
  • Creating harsh environmental conditions
  • Which of the following is true about the biofilm formation process?

  • It is a one-stage process
  • Attachment to the substrate becomes irreversible as cells express new phenotypes (correct)
  • It involves free-floating cells only
  • It always leads to dental diseases
  • What are biofilms composed of?

  • Different microbial species embedded in a matrix (correct)
  • Only viruses
  • Purely organic material
  • Only bacteria
  • How do planktonic cells transition to a sessile lifestyle during biofilm formation?

    <p>By attaching to a surface coated with organic material</p> Signup and view all the answers

    What is the function of appendages like fimbriae, pili, and flagella in biofilm formation?

    <p>Interact with the EPS for establishment of a mature biofilm</p> Signup and view all the answers

    What defines biofilms as complex communities?

    <p>Composed of different microbial species embedded in a slimy coating</p> Signup and view all the answers

    At what stage in biofilm formation does attachment to the substrate become reversible?

    <p>First stage</p> Signup and view all the answers

    What is an extrapolymeric substance (EPS) in biofilms primarily composed of?

    <p>'Extrapolymeric' substance related to the matrix</p> Signup and view all the answers

    What is the primary function of biofilms in the lining of the intestinal and respiratory mucosa?

    <p>To ward off infections</p> Signup and view all the answers

    What is the main purpose of the extrapolymeric substance (EPS) in biofilms?

    <p>To provide a slimy coating for the biofilm</p> Signup and view all the answers

    What is the primary role of appendages like fimbriae, pili, and flagella in biofilm formation?

    <p>To interact with the EPS and facilitate the establishment of a mature biofilm</p> Signup and view all the answers

    At what stage in biofilm formation does attachment to the substrate become irreversible?

    <p>When planktonic cells express new phenotypes that facilitate the formation of EPS</p> Signup and view all the answers

    What is the primary function of biofilms in natural environments?

    <p>To provide protection against harsh environmental conditions</p> Signup and view all the answers

    What is the first stage of biofilm formation?

    <p>The attachment of planktonic cells to a surface coated with a conditioning film of organic material</p> Signup and view all the answers

    What is the main factor that defines biofilms as complex communities?

    <p>The presence of different microbial species embedded in the EPS</p> Signup and view all the answers

    What is the primary role of biofilms in the colonization of a specific site?

    <p>To aid in the colonization of a specific site</p> Signup and view all the answers

    What is the main component of the extrapolymeric substance (EPS) in biofilms?

    <p>The text does not provide this information</p> Signup and view all the answers

    Which of the following is true about the role of biofilms in the human body?

    <p>Biofilms can be both beneficial and harmful, depending on their location</p> Signup and view all the answers

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