Enterobacteriaceae Characteristics and Classification Quiz
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Questions and Answers

Which characteristic is common to all members of the Enterobacteriaceae family?

  • Oxidase-positive
  • Gram-positive rods
  • Ferment glucose with acid production (correct)
  • Do not reduce nitrates into nitrites

    • Which of the following bacteria is classified as a Lactose Non-Fermenter?

  • Escherichia coli
  • Klebsiella
  • Citrobacter
  • Salmonella (correct)

    • What is a characteristic pathogenesis factor of Escherichia coli?

  • Pili for attachment
  • Produce nitrites
  • Urease production
  • Capsule formation (correct)

    • Which bacteria is NOT associated with pneumonia?

    <p>Salmonella</p> Signup and view all the answers

    Which Enterobacteriaceae member is known for causing typhoid fever?

    <p>Citrobacter</p> Signup and view all the answers

    What unique disease does Yersinia pestis cause?

    <p>Plague</p> Signup and view all the answers

    Which bacterium is associated with traveler's diarrhea?

    <p>Escherichia coli</p> Signup and view all the answers

    What is the habitat of the bacteria mentioned in the text?

    <p>Human colon, upper respiratory and enteric tracts</p> Signup and view all the answers

    Which bacterium causes typhoid fever?

    <p>Salmonella typhi</p> Signup and view all the answers

    What is a common transmission route for these bacteria?

    <p>Respiratory droplets</p> Signup and view all the answers

    Which bacterium causes bubonic plague?

    <p>Yersinia pestis</p> Signup and view all the answers

    'Hospital-acquired pneumonia' is associated with which bacterium?

    <p>Serratia marcescens</p> Signup and view all the answers

    Which of the following bacteria is associated with the formation of urinary stones?

    <p>Proteus species</p> Signup and view all the answers

    Which pathogenesis mechanism is involved in Shigella species causing dysentery?

    <p>Invasion of the ileum and colon mucosa</p> Signup and view all the answers

    What is the primary pathogenesis mechanism of Salmonella typhi?

    <p>Infecting cells of the reticuloendothelial system</p> Signup and view all the answers

    Which of the following bacteria is classified as a Lactose Fermenter (LF)?

    <p>Enterobacter cloacae</p> Signup and view all the answers

    Which pathogenesis mechanism is common to both Klebsiella pneumoniae and Escherichia coli?

    <p>Endotoxin production</p> Signup and view all the answers

    Which of the following bacteria is capable of causing pneumonic plague?

    <p>Yersinia pestis</p> Signup and view all the answers

    Which bacterial species is primarily associated with dysentery?

    <p>Shigella species</p> Signup and view all the answers

    Which predisposing factor increases the risk of urinary tract infections (UTIs) in individuals?

    <p>Proximity of the anus to the vagina and urethra</p> Signup and view all the answers

    Which bacterial species is known to cause pneumonic plague?

    <p>Yersinia pestis</p> Signup and view all the answers

    Which bacterial infection is associated with sepsis and metastatic abscesses?

    <p>Salmonella typhi</p> Signup and view all the answers

    Which bacterial species is commonly associated with hospital-acquired pneumonia?

    <p>Both b and c</p> Signup and view all the answers

    Which predisposing factor increases the risk of urinary tract infections (UTIs) in individuals?

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

    Which bacterial species is associated with neonatal meningitis?

    <p>Klebsiella pneumoniae</p> Signup and view all the answers

    Which pathogen is linked to traveler's diarrhea?

    <p>Salmonella typhi</p> Signup and view all the answers

    Which bacteria is a common cause of hospital-acquired pneumonia?

    <p>Enterobacter cloacae</p> Signup and view all the answers

    Which bacterium is primarily associated with typhoid fever?

    <p>Salmonella typhi</p> Signup and view all the answers

    What infection is linked to UTI, sepsis, and bubonic plague?

    <p>Yersinia pestis</p> Signup and view all the answers

    Which bacterial species cause dysentery?

    <p>Shigella species</p> Signup and view all the answers

    Which of the following statements is true regarding the pathogenesis of Enterobacteriaceae members?

    <p>Proteus species can lead to stone formation in the urinary tract due to their urease production.</p> Signup and view all the answers

    Which of the following is a characteristic shared by all members of the Enterobacteriaceae family?

    <p>Reduction of nitrates to nitrites</p> Signup and view all the answers

    Which of the following combinations of bacteria and associated disease is incorrect?

    <p>Escherichia coli - Cholera</p> Signup and view all the answers

    Which of the following statements regarding the classification of Enterobacteriaceae members based on lactose fermentation is incorrect?

    <p>Klebsiella pneumoniae and Enterobacter cloacae are classified as Lactose Fermenters.</p> Signup and view all the answers

    Which of the following statements regarding the pathogenesis of Enterobacteriaceae members is incorrect?

    <p>Shigella species pathogenesis involves invading the mucosa of the small intestine.</p> Signup and view all the answers

    Which of the following Enterobacteriaceae members is not associated with causing hospital-acquired infections?

    <p>Salmonella typhi</p> Signup and view all the answers

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