Enteric Gram-negative rods: Escherichia coli Characteristics Quiz
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Questions and Answers

Which of the following is a characteristic of Enteric Gram-negative rods?

  • Optimal growth at 25°C
  • Non-motile
  • Anaerobic growth (correct)
  • Ferment a limited range of carbohydrates

    • Which group of bacteria does not ferment lactose according to the text?

  • Escherichia
  • Klebsiella
  • Enterobacter
  • Salmonella (correct)

    • Which of the following Enterobacteriaceae is motile?

  • Proteus (correct)
  • Shigella
  • Escherichia
  • Klebsiella

    • Which of the following is a characteristic of Enterobacteriaceae antigens?

    <p>'H' antigen</p> Signup and view all the answers

    What is a common feature of Enteric Gram-negative rods regarding spore formation?

    <p>Non-spore forming</p> Signup and view all the answers

    What is the morphology of Escherichia coli?

    <p>Gram-negative rod-shaped</p> Signup and view all the answers

    How many layers of peptidoglycan are present in the cell wall of E.coli?

    <p>1-2 layers</p> Signup and view all the answers

    What makes some strains of E.coli motile?

    <p>Presence of fimbriae</p> Signup and view all the answers

    Which antigen of E.coli is heat and alcohol labile and is present on the flagella?

    <p>Flagellar (H) Antigen</p> Signup and view all the answers

    What is the main effect of the heat stable lipopolysaccharide in E.coli?

    <p>Endotoxic shock and intravascular coagulopathy</p> Signup and view all the answers

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