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First-Line Defenses: Normal Microflora quiz

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  • What is another term for normal microbiota?
    Normal microbiota is also referred to as the microbiome.
  • Where are normal microbiota found in humans?
    Normal microbiota are found in and on healthy humans.
  • How does the normal microbiota serve as a first line of defense?
    It blocks attachment sites and produces toxic chemicals to protect against pathogenic microbes.
  • When do humans acquire their microbiota?
    Humans acquire their microbiota during and after childbirth.
  • What happens when normal microbiota is disrupted?
    Disruption increases susceptibility to infections, often due to antibiotics.
  • What are probiotics?
    Probiotics are live microbe cultures that benefit the normal microbiota.
  • What are prebiotics?
    Prebiotics are chemicals that promote the growth of beneficial microbes.
  • How do some members of the microbiota protect us from pathogens?
    They block attachment sites used by pathogenic microbes.
  • What is the role of chemicals produced by the microbiota?
    These chemicals are toxic to pathogenic bacteria, helping protect us.
  • What effect do antibiotics have on normal microbiota?
    Antibiotics can disrupt normal microbiota, making us more susceptible to infections.
  • Why is the normal microbiota essential during and after childbirth?
    It is essential for immune development in humans.
  • What does the cartoon in the lesson illustrate about the microbiome?
    It shows the microbiome acting as a protective barrier against pathogenic microbes.
  • What is the relationship between probiotics and prebiotics?
    Probiotics are live microbes, while prebiotics are chemicals that help these microbes grow.
  • How does a healthy microbiome affect human health?
    A healthy microbiome protects against pathogenic microbes and supports immune function.
  • What is the main function of the normal microbiota in innate immunity?
    It acts as a first line of defense by preventing pathogen colonization and supporting immune development.