Gram Negative vs
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Questions and Answers

Which type of bacteria stains purple or violet in a gram stain?

  • Gram positive (correct)
  • Gram negative
  • Neither
  • Both

    • What color do gram negative bacteria stain in a gram stain?

  • Yellow or orange
  • Pink or red (correct)
  • Purple or violet
  • Blue or green

    • What is the main difference between the cell walls of gram positive and gram negative bacteria?

  • Gram negative cell walls contain a thick peptidoglycan layer (correct)
  • Gram negative cell walls contain teichoic acids
  • Gram positive cell walls contain a thick plasma membrane
  • Gram positive cell walls contain a thin peptidoglycan layer

    • What is the main difference between exotoxins and endotoxins?

    <p>Exotoxins are produced inside the cell and secreted outside, while endotoxins are part of the outer layer of gram positive bacteria</p> Signup and view all the answers

    Why are antibiotics effective against bacteria?

    <p>Antibiotics inhibit the growth of bacteria</p> Signup and view all the answers

    What methods do bacteria use to share antibiotic resistant genes?

    <p>All of the above</p> Signup and view all the answers

    How do bacteria transfer plasmid DNA to another bacterium?

    <p>Through their pilus (sex pistols)</p> Signup and view all the answers

    What happens when a virus injects DNA into a host cell?

    <p>The virus incorporates the bacterial DNA into their own DNA</p> Signup and view all the answers

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