Microorganisms
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Questions and Answers

Which of the following diseases is caused by a virus?

  • Tuberculosis
  • Malaria
  • Cholera
  • Influenza (correct)
  • Which of the following is a common method of food preservation using microorganisms?

  • Fermentation (correct)
  • Microwaving
  • Salting
  • Freezing
  • What is the role of nitrogen-fixing bacteria in agriculture?

  • Converting atmospheric nitrogen into a form that plants can use (correct)
  • Producing harmful toxins in the soil
  • Causing nitrogen depletion in the soil
  • Absorbing excess nitrogen from the soil
  • Which of the following is a fossil fuel?

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

    What is the primary component of coal?

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

    Which process is responsible for the formation of petroleum?

    <p>Decomposition of marine organisms</p> Signup and view all the answers

    Study Notes

    Diseases and Microorganisms

    • Influenza is a disease caused by a virus.
    • Fermentation is a common method of food preservation using microorganisms.

    Nitrogen-fixing Bacteria and Agriculture

    • Nitrogen-fixing bacteria play a crucial role in agriculture by converting atmospheric nitrogen into a form that can be used by plants.

    Fossil Fuels

    • Coal is a fossil fuel.
    • The primary component of coal is carbon.
    • Petroleum is formed through the process of diagenesis, which involves the transformation of organic matter under high pressure and temperature over millions of years.

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    Description

    Test your knowledge on microorganisms as both friends and foes with this class 8th quiz. Explore common methods of food preservation using microorganisms, the role of nitrogen-fixing bacteria in agriculture, and diseases caused by viruses. Sharpen your understanding of these vital aspects of microbiology.

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