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Questions and Answers

What type of colonies are formed by S.pneumoniae on blood agar?

  • a-hemolytic mucoid colonies (correct)
  • c-hemolytic colonies
  • b-hemolytic colonies
  • non-hemolytic colonies
  • Which test is used to examine sputum for encapsulated bacteria in the diagnosis of S.pneumoniae?

  • Quellung test (correct)
  • Bile solubility test
  • Optochin disks
  • Direct smears
  • Which test is used to determine the sensitivity of S.pneumoniae to a compound?

  • Blood agar test
  • Optochin disks (correct)
  • Bile solubility test
  • Quellung test
  • What is the recommended treatment for S.pneumoniae infections, except for meningitis?

    <p>Penicillin G</p> Signup and view all the answers

    Who is recommended to receive the polysaccharide vaccine for S.pneumoniae?

    <p>High-risk groups</p> Signup and view all the answers

    What is the concern regarding the treatment of multiple-resistant pneumococci?

    <p>Spread of resistance from enterococci</p> Signup and view all the answers

    Which of the following statements about Mycoplasmas is true?

    <p>Mycoplasmas require sterols for growth</p> Signup and view all the answers

    What is the smallest known genome size of any self-replicating organism?

    <p>580 kbp</p> Signup and view all the answers

    Which of the following statements about Ureaplasma is true?

    <p>Ureaplasma requires cholesterol and urea for growth</p> Signup and view all the answers

    Which of the following statements about Acholeplasma is true?

    <p>Acholeplasma can grow in the absence of sterols</p> Signup and view all the answers

    Which of the following statements about Mycoplasma pneumoniae is true?

    <p>Mycoplasma pneumoniae causes primary atypical pneumonia in humans</p> Signup and view all the answers

    Which of the following statements about Mycoplasma genitalium is true?

    <p>Mycoplasma genitalium is transmitted through direct venereal contact</p> Signup and view all the answers

    Which type of bacteria is known for producing lactic acid as a product of fermentation?

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

    Which type of bacteria is tolerant of acid and can grow at pH 6?

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

    Which type of fermentation pathway produces lactic acid as the only fermentation product?

    <p>Embden-Meyerhof pathway</p> Signup and view all the answers

    Which type of fermentation pathway produces lactic acid, ethanol, and carbon dioxide as fermentation products?

    <p>Pentose phosphate pathway</p> Signup and view all the answers

    Which of the following is NOT a major known function of Lactobacillus bulgaricus?

    <p>Production of Swiss cheese</p> Signup and view all the answers

    Which group of Streptococci is known for complete hemolysis and the production of toxins?

    <p>Group A</p> Signup and view all the answers

    Which of the following is a characteristic of Streptococcus pyogenes?

    <p>It may cause streptococcal impetigo</p> Signup and view all the answers

    Which of the following is NOT a symptom of Scarlet Fever?

    <p>Joint pain</p> Signup and view all the answers

    What is the major cause of rheumatic fever?

    <p>Untreated pharyngeal infection caused by Streptococcus pyogenes</p> Signup and view all the answers

    Which of the following is a characteristic of Group B Streptococci?

    <p>It is present in the vaginal flora of 25% of women</p> Signup and view all the answers

    What is the major cause of bacterial endocarditis?

    <p>Streptococcus viridans</p> Signup and view all the answers

    Which of the following is a characteristic of Streptococcus pneumoniae?

    <p>It is encapsulated and resists phagocytosis</p> Signup and view all the answers

    Which group of bacteria completely lack a cell wall and only have a plasma membrane?

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

    Which group of bacteria are phylogenetically related to the low GC gram positives, despite staining gram negative?

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

    Which group of bacteria are pleomorphic, with coccoid cells that are probably the smallest living cells?

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

    Which group of bacteria includes Streptococcus, Lactobacillus, and Staphylococcus?

    <p>The Firmicutes</p> Signup and view all the answers

    Which group of bacteria includes Clostridium, Bacillus, and Corynebacteria?

    <p>The Firmicutes</p> Signup and view all the answers

    Which group of bacteria includes Mycobacteria and Listeria?

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

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