Microbiology Terminology Quiz
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Questions and Answers

What is the term for microorganisms that colonize a host without causing disease?

  • Pathogens
  • Invasiveness
  • Normal Flora (correct)
  • Toxigenesis
  • Which type of infection occurs when the infectious agent spreads throughout the body by blood or lymph?

  • Primary infection
  • Localized infection
  • Systemic infection (correct)
  • Superficial infection
  • What is the term for the capacity of bacteria to cause disease by overcoming the host defenses?

  • Invasiveness
  • Normal flora
  • Virulence factors (correct)
  • Local immunity
  • Which mechanism of bacterial pathogenicity involves the ability to invade tissues and encompass mechanisms for colonization and production of substances facilitating invasion?

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

    What is the term for the bacterial extracellular substances that break down primary or secondary defenses of the body?

    <p>Spreading factors</p> Signup and view all the answers

    Which type of resistance must be induced or turned on by host exposure to a pathogen and is directed against specific microbes?

    <p>Acquired immunity</p> Signup and view all the answers

    What is the normal pH range maintained by the normal bacterial microorganisms of the adult human vagina?

    <p>3.4 - 4.5</p> Signup and view all the answers

    What are the dominant bacterial species in dental plaque?

    <p>Streptococcus sanguis</p> Signup and view all the answers

    What is dental caries?

    <p>A bacterial infection causing demineralization and destruction of teeth</p> Signup and view all the answers

    What is the term for non-sterile sites that have normal flora and are directly exposed to the environment?

    <p>Contaminated sites</p> Signup and view all the answers

    What type of resistance involves skin as a physical barrier, nasal hairs, and a reflex of coughing as protective mechanisms?

    <p>Innate immunity</p> Signup and view all the answers

    What is the term for substances or features of a microorganism that help it infect and cause disease?

    <p>Virulence factors</p> Signup and view all the answers

    What is the term used to describe bacteria and fungi that are permanent residents of certain body sites?

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

    Which term is used to describe the acquisition of a new organism to a site in the body?

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

    What type of relationship exists when two or more organisms co-exist in close physical association?

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

    In which type of symbiotic relationship do both partners benefit?

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

    What is the term for a type of relationship in which one organism benefits and the other is unaffected?

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

    What is the term for a relationship in which one organism benefits at the expense of the other?

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

    What is the ability of a microorganism to cause disease by overcoming the host's defenses known as?

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

    What is the term used for an infected person who can either be a case or a carrier of an infection?

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

    What is the term for a disease that is transferred from animal to human?

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

    Which type of pathogen is only capable of causing disease when the immune system is overcome or when introduced to an unusual location?

    <p>Opportunistic pathogen</p> Signup and view all the answers

    Which term is used to describe bacteria and fungi that are permanent residents of certain body sites?

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

    What is the term for a relationship in which one organism benefits at the expense of the other?

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

    Which mechanism of bacterial pathogenicity involves the ability to invade tissues and encompass mechanisms for colonization and production of substances facilitating invasion?

    <p>Virulence Factors production</p> Signup and view all the answers

    What is the term for substances or features of a microorganism that help it infect and cause disease?

    <p>Virulence Factors</p> Signup and view all the answers

    In which type of symbiotic relationship do both partners benefit?

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

    What is the term for microorganisms that colonize a host without causing disease?

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

    Which term describes a type of symbiotic relationship in which one organism (parasite) benefits at the expense of the other (host)?

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

    What is the term for a localized infection where invading microorganisms are limited to a small area (e.g. abscesses)?

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

    Which type of pathogen is never completely eliminated, remains inactive in the body, but can be reactivated if the immune system is weak?

    <p>Latent pathogen</p> Signup and view all the answers

    What do we call the time between the initial infection and the first appearance of signs and symptoms of a disease?

    <p>Incubation period</p> Signup and view all the answers

    What is the term for substances or features of a microorganism that help it infect and cause disease?

    <p>Virulence factors</p> Signup and view all the answers

    Which type of resistance must be induced or turned on by host exposure to a pathogen and is directed against specific microbes?

    <p>Adaptive resistance</p> Signup and view all the answers

    What do we call non-sterile sites that have normal flora and are directly exposed to the environment?

    <p>Non-sterile sites</p> Signup and view all the answers

    What is the term for a rapid onset, short-duration infectious disease like influenza?

    <p>Acute disease</p> Signup and view all the answers

    Which mechanism of bacterial pathogenicity involves the ability to invade tissues and encompass mechanisms for colonization and production of substances facilitating invasion?

    <p>Invasion factors</p> Signup and view all the answers

    What do we call microorganisms that colonize a host without causing disease, and can prevent colonization by pathogens and simulate the production of natural antibodies?

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

    What is dental caries?

    <p>Bacterial infection that causes demineralization and destruction of tooth tissues.</p> Signup and view all the answers

    What is normal pH maintained by normal bacterial microorganisms in the adult human vagina?

    <p>3.4 – 4.5</p> Signup and view all the answers

    What is the term for the ability of a microorganism to produce toxins?

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

    Which bacterial substance is associated with the cell walls of Gram-negative bacteria?

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

    Which bacterial toxin is released into the extracellular environment of pathogenic bacteria?

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

    Which mechanism of bacterial pathogenicity encompasses mechanisms for colonization, production of extracellular substances facilitating invasion, and ability to bypass or overcome host defense mechanisms?

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

    Which type of bacterial toxin is soluble in body fluids and easily diffused into blood, making them highly specific and lethal?

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

    What is the term used to describe the establishment of the pathogen at the appropriate portal of entry?

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

    Which type of bacterial toxin is found in the lipid portion of the outer wall of Gram-negative bacteria?

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

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