Disease and Infectious Disease Definitions
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Questions and Answers

What does LD50 stand for in microbiology?

  • Low Dose 50
  • Long Duration 50
  • Lethal Dose 50 (correct)
  • Large Dose 50

    • Which of the following is an example of ID50?

  • Vibrio cholerae
  • 100,000,000 cells
  • 108 spores
  • 5,000 to 10,000 spores (correct)

    • How do pathogens primarily gain entrance into the body through the skin?

  • Inhalation through the skin
  • Through hair follicles and sweat glands (correct)
  • By binding to skin cells
  • Via pores

    • What do pathogens use to attach to host tissue?

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

    Which feature plays a crucial role in tissue tropism?

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

    What does ID50 represent in microbiology?

    <p>Infectious Dose 50</p> Signup and view all the answers

    What is the main difference between a pandemic and an epidemic disease?

    <p>The geographical area affected by the disease</p> Signup and view all the answers

    What is the term for the ability of a microbe to cause disease?

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

    What type of disease is normally found in a certain percentage of a population?

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

    What is the term for the degree of pathogenicity?

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

    What are the factors produced by a microorganism that induce pathology in a host?

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

    What is a disease condition caused by the presence or growth of infectious microorganisms or parasites?

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

    What is the defining characteristic of an opportunistic pathogen?

    <p>It is generally harmless but can cause disease when it gains access to other sites or tissues</p> Signup and view all the answers

    What is the difference between pathogenicity and virulence?

    <p>Pathogenicity is the capacity of a microbe to cause disease in a host, while virulence is the degree of pathogenicity</p> Signup and view all the answers

    What is the difference between an epidemic and a pandemic?

    <p>An epidemic is a sudden increase in the number of cases of a particular disease in a specific geographic area, while a pandemic is a global outbreak of a disease</p> Signup and view all the answers

    What is the difference between an endemic and an epidemic disease?

    <p>An endemic disease is a disease that is always present in a specific population, while an epidemic disease is a sudden increase in the number of cases of a particular disease in a specific geographic area</p> Signup and view all the answers

    Which of the following best describes the relationship between an obligate pathogen and its host?

    <p>The pathogen always causes disease</p> Signup and view all the answers

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