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Microbes: Visible and Invisible
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Microbes: Visible and Invisible

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Questions and Answers

The traditional definition of microbes is based on their ___.

  • Size and complexity
  • Color and shape
  • Visibility to the naked eye (correct)
  • Ability to be studied with a microscope

    • What is the main reason for modifying the traditional definition of microbes?

  • To describe their division of labor
  • To acknowledge their branching filaments
  • To include multicellular microbes (correct)
  • To account for their small size

    • What distinguishes microbes from other organisms, according to the modified definition?

  • Highly differentiated structure
  • Ability of cells to function independently (correct)
  • Set division of labor among cells
  • Visible without a microscope

    • Why is it important to have common techniques in microbiology research?

    <p>To isolate specific types of microbes</p> Signup and view all the answers

    What characteristic makes multicellular microbes relatively simple in design?

    <p>Being composed of branching filaments</p> Signup and view all the answers

    In what aspect can multicellular microbes differ significantly from other organisms?

    <p>Response to being divided into smaller parts</p> Signup and view all the answers

    What is the typical size range of a bacterial cell, such as E.coli, in micrometers?

    <p>1 µm wide by 4 µm long</p> Signup and view all the answers

    How does the small size of microbes hinder their discovery?

    <p>It makes it hard for people to believe their existence without being able to see them.</p> Signup and view all the answers

    Who is credited with publishing the first drawings of microorganisms?

    <p>Robert Hooke</p> Signup and view all the answers

    What is the approximate diameter of a typical virus like the influenza virus, in nanometers?

    <p>100 nm</p> Signup and view all the answers

    Why did Robert Hooke's ability to observe microbes appear to be limited?

    <p>His microscopes lacked resolution</p> Signup and view all the answers

    Who was a Dutch cloth merchant credited with significant contributions to microbiology?

    <p>Antony van Leeuwenhoek</p> Signup and view all the answers

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