Microbiology Quiz: Bacteria Count in a Lecture Theatre
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Questions and Answers

What is the approximate number of bacteria present in an average lecture theatre?

  • 20 billion
  • 20 quintillion (correct)
  • 20 trillion
  • 20 quadrillion
  • How many unique microbial genes are present in the human microbiome?

  • 10 million unique microbial genes (correct)
  • 100 million unique microbial genes
  • 100,000 unique microbial genes
  • 1 million unique microbial genes
  • What is the relationship type where one organism benefits and the other is unaffected?

  • Both benefit
  • Commensalism (correct)
  • Mutualism
  • Parasitism
  • Which body site has the most diverse microbiota?

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

    What functions do the human microbiome serve?

    <p>Protective and metabolic functions</p> Signup and view all the answers

    Where does the acquisition of a person's microbiome typically start?

    <p>Sterile (Cesarean section) environment</p> Signup and view all the answers

    What plays a role in immune tolerance according to the text?

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

    Which of the following predominantly colonizes the skin and skin structures, according to the text?

    <p>Coagulase negative staphylococci</p> Signup and view all the answers

    What type of flora is normally present on the skin?

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

    At what age is the microbiota thought to 'stabilize' according to the text?

    <p>3-4 years</p> Signup and view all the answers

    Which factors affect the microbiota based on the text?

    <p>Diet, environment, and host genetics</p> Signup and view all the answers

    What has low-level microbiome according to the text?

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

    What is the most cost-effective infection control measure?

    <p>Hand hygiene</p> Signup and view all the answers

    What factor can reduce compliance rates for hand disinfection?

    <p>Wearing jewellery</p> Signup and view all the answers

    Which of the following is NOT mentioned as part of the normal flora of the respiratory tract?

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

    What does dysbiosis refer to?

    <p>A microbial imbalance on or inside the body</p> Signup and view all the answers

    Which of the following is a component of the gut microbiome?

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

    How can dysbiosis affect long-term metabolic consequences?

    <p>By disrupting the composition and diversity of microbiota</p> Signup and view all the answers

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