History of Microorganisms in Disease
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Questions and Answers

What distinguished viruses from other microorganisms, as mentioned in the text?

  • They were associated with disease and death.
  • They could be cultivated on artificial media.
  • They were visible under a light microscope.
  • They could pass through a 0.2µ filter. (correct)

    • Who performed classical investigations on the mosaic disease of tobacco, as mentioned in the text?

  • Koch
  • Pasteur
  • Beijerink
  • Mayer (correct)

    • What key concept was first discovered about viruses according to the text?

  • They could pass through a 0.2µ filter. (correct)
  • They were large in size.
  • They could be cultivated on artificial media.
  • They were visible under a light microscope.

    • Which scientist postulated enormously enhanced isolation and characterization of disease-inciting microorganisms or 'germs' in 1880?

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

    What did viruses retain when passing through a porcelain filter, as mentioned in the text?

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

    What was a limitation of viruses mentioned in the text that differentiated them from bacteria?

    <p>They could not be cultivated for study on artificial media.</p> Signup and view all the answers

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