Microbiology Quiz: Bacteria Identification
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Questions and Answers

Which organism is identified as a spore-forming, gram-positive bacilli that is frequently environmental and rarely pathogenic?

  • Clostridium difficile
  • Bacillus anthracis
  • Bacillus subtilis (correct)
  • Clostridium perfringens
  • What key biochemical reaction distinguishes Neisseria gonorrhoeae from Neisseria meningitidis?

  • Non-motile
  • Ferments glucose and maltose
  • Ferments glucose only (correct)
  • Oxidase negative
  • Which organism is associated with pseudomembranous colitis and requires anaerobic growth conditions?

  • Clostridium difficile (correct)
  • Moraxella catarrhalis
  • Bacillus anthracis
  • Clostridium perfringens
  • Identify the organism characterized by forming 'Medusa head' colonies and being associated with anthrax.

    <p>Bacillus anthracis</p> Signup and view all the answers

    Which organism is known for forming a double zone of hemolysis and is responsible for gas gangrene?

    <p>Clostridium perfringens</p> Signup and view all the answers

    Which organism is resistant to penicillin and is known for causing meningitis and septicemia?

    <p>Neisseria meningitidis</p> Signup and view all the answers

    Which gram-negative diplococcus is known to require CO2 for growth and is penicillin-sensitive?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

    Which organism is characterized by producing smooth colonies that resemble a 'hockey puck'?

    <p>Moraxella catarrhalis</p> Signup and view all the answers

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