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 (A)</p> Signup and view all the answers

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

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

Which media are used to grow fastidious bacteria?

<p>Enriched media (A)</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 (A)</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 (C)</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 (B)</p> Signup and view all the answers

What is the purpose of assay media in microbiology?

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

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

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

What is the role of peptone in culture media?

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

Why is agar used in microbiological media?

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

What are the mineral salts commonly found in culture media?

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

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

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

What are growth factors in culture media used for?

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

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