Classification of Culture Media in Microbiology
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Classification of Culture Media in Microbiology

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Questions and Answers

Which type of media is useful for the observation of bacterial motility and preservation of bacteria?

  • Liquid or broth media
  • Semi-synthetic medium (correct)
  • Artificial or synthetic media
  • Solid media

    • What is the agar percentage range in solid media used for the isolation and identification of bacteria?

  • 0.3-0.5%
  • 2-4%
  • 1.5-2.5% (correct)
  • 0.1-0.3%

    • Which type of media supports most non-fastidious bacteria?

  • Artificial or synthetic media
  • Semi-solid media
  • Enriched media
  • General purpose media (correct)

    • What is the composition of natural medium based on?

    <p>Exact chemical compositions</p> Signup and view all the answers

    In which classification is Potato Dextrose Agar (PDA) categorized?

    <p>Semi-synthetic medium</p> Signup and view all the answers

    Which media are used to grow fastidious bacteria?

    <p>Enriched media</p> Signup and view all the answers

    What is the main purpose of selective media in microbiology?

    <p>Inhibit the growth of certain organisms while promoting the growth of others</p> Signup and view all the answers

    Which type of media would be most suitable for visually differentiating between E.coli and Salmonella based on lactose fermentation?

    <p>Differential media</p> Signup and view all the answers

    In which type of media would you typically find indicators like Thiosulphate Citrate Bile salt Sucrose for the isolation of Vibrio cholera?

    <p>Specialized media</p> Signup and view all the answers

    What is the purpose of assay media in microbiology?

    <p>Conduct sensitivity tests for substances like antibiotics</p> Signup and view all the answers

    Which type of media would be most effective in promoting the growth of a specific genus of bacteria with minimal interference from others?

    <p>Selective media</p> Signup and view all the answers

    What is the main purpose of using culture media in microbiology?

    <p>To provide nutrients to microorganisms</p> Signup and view all the answers

    What is the role of peptone in culture media?

    <p>Supplying carbon and nitrogen</p> Signup and view all the answers

    Why is agar used in microbiological media?

    <p>To solidify the media</p> Signup and view all the answers

    What are the mineral salts commonly found in culture media?

    <p>Phosphates, chlorides, sulfates</p> Signup and view all the answers

    What is the suitable pH range for growth in culture media?

    <p>7.2 - 7.4</p> Signup and view all the answers

    What are growth factors in culture media used for?

    <p>Promoting microbial growth</p> Signup and view all the answers

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