Genotypic Classification in Microbiology
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Questions and Answers

What do phenotypic characteristics relate to?

  • Organism's genetic makeup
  • Strain differentiation
  • Features beyond the genetic level (correct)
  • Cloning of organisms

    • Which method is used to identify an organism's genetic makeup?

  • Genotypic characteristics (correct)
  • Phenotypic characteristics
  • Wet mount method
  • Hanging-drop method

    • What do genotypic characteristics include?

  • Microscopic examination
  • Readily observable features
  • Features beyond the genetic level
  • Organism's genetic makeup (correct)

    • Why do bacteria, microscopic algae, fungi, and protozoans not lend themselves readily to microscopic examination?

    <p>They lack color and contrast</p> Signup and view all the answers

    Which method is suitable for observing living microorganisms in a living, unstained state?

    <p>Wet mount method</p> Signup and view all the answers

    What does Brownian movement refer to in the context of microscopy?

    <p>Movement from left to right</p> Signup and view all the answers

    What is the main purpose of sporulation in bacteria?

    <p>To protect bacteria from harsh environmental conditions</p> Signup and view all the answers

    Which type of bacteria has a thicker cell wall and lacks an outer membrane?

    <p>Gram-positive</p> Signup and view all the answers

    How do Gram-negative bacteria react to the staining process?

    <p>Decolorize after alcohol treatment</p> Signup and view all the answers

    Which component is present in the cell wall of Gram-positive bacteria but absent in Gram-negative bacteria?

    <p>Teichoic acid</p> Signup and view all the answers

    What is a characteristic feature of the outer membrane in Gram-negative bacteria?

    <p>Contains lipopolysaccharide</p> Signup and view all the answers

    Why are Gram-negative bacteria more susceptible to antibiotics targeting the cell wall?

    <p>Thinner peptidoglycan layer</p> Signup and view all the answers

    What distinguishes a biovar from a serovar?

    <p>Biovar is differentiated by biochemical means, while serovar is differentiated by serological means.</p> Signup and view all the answers

    How does a clone differ from a strain?

    <p>A clone contains organisms with identical genotypes, while strains are morphologically distinct.</p> Signup and view all the answers

    What is the main characteristic used to differentiate morphovars?

    <p>Morphological distinctions</p> Signup and view all the answers

    Which classification method involves DNA fingerprinting and genome analyses?

    <p>Genotypic classification</p> Signup and view all the answers

    What distinguishes a strain from an isolate?

    <p>Isolates are not pure cultures, while strains come from pure cultures.</p> Signup and view all the answers

    What characteristic differentiates subspecies within a species?

    <p><strong>Genotype</strong></p> Signup and view all the answers

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