Biology of Infectious Microorganisms Quiz
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Questions and Answers

Which type of microorganism uses energy from light photons?

  • Mixotrophs
  • Chemotrophs
  • Photoautotrophs (correct)
  • Heterotrophs

    • What is the main difference between autotrophs and heterotrophs?

  • Autotrophs use light energy for growth, while heterotrophs use chemical bonds' energy.
  • Autotrophs fix CO2 for carbon, while heterotrophs use glucose as a carbon source. (correct)
  • Autotrophs use organic carbon molecules, while heterotrophs use inorganic carbon.
  • Autotrophs are mixotrophic, while heterotrophs are not.

    • Which of the following is an example of a lithoautotroph?

  • Thiobacillus (correct)
  • Protists
  • Cyanobacteria
  • Green plants

    • What is the main energy source for organoheterotrophs?

    <p>Organic compounds</p> Signup and view all the answers

    Which microorganism type utilizes hydrogen-oxidizing and sulfur-oxidizing metabolic pathways?

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

    What is the primary carbon source for photoheterotrophs?

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

    Which of the following is characteristic of mixotrophs?

    <p>Can be either autotrophic or heterotrophic</p> Signup and view all the answers

    What distinguishes chemoautotrophs from photoautotrophs?

    <p>Energy source for reduction</p> Signup and view all the answers

    Which of the following is incorrect about Cyanobacteria?

    <p>Use organic compounds as a carbon source</p> Signup and view all the answers

    Which of the following microorganisms can be considered mixotrophic by their metabolism?

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

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