Bacteria Beyond the Cell Wall
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Questions and Answers

Which of the following bacterial species is resistant to antibiotics?

  • Rickettsia
  • Chlamydiaceae
  • Mycoplasma (correct)
  • Ureaplasma
  • Which of the following bacteria is resistant to antibiotics?

  • Chlamydiaceae
  • Mycoplasma (correct)
  • Rickettsia
  • None of the above
  • Which bacteria is known to cause lymphogranuloma venereum?

  • Mycoplasma
  • Chlamydia pneumoniae
  • Chlamydia trachomatis (correct)
  • Rickettsia
  • Which of the following bacteria is characterized by a unique developmental cycle consisting of elementary and reticulate forms?

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

    Which of the following bacterial species is NOT an obligate intracellular pathogen?

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

    Which bacteria is responsible for causing atypical pneumonia?

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

    Which bacterial species causes lymphogranuloma venereum?

    <p>Chlamydia trachomatis biovar LGV</p> Signup and view all the answers

    Which of the following bacteria is medically important for causing lymphogranuloma venereum?

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

    Which bacteria is resistant to peptidoglycan inhibitors?

    <p>Mycoplasma and Ureaplasma</p> Signup and view all the answers

    Which bacterial species causes atypical pneumonia?

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

    Which bacterial species is resistant to peptidoglycan inhibitors?

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

    Which of the following bacteria is transmitted by arthropod bites?

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

    Which bacteria is known to cause atypical pneumonia?

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

    Which bacterial species is transmitted by arthropod bites?

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

    Which of the following bacterial infections can lead to tissue damage upon re-infection?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species causes lymphogranuloma venereum?

    <p>Chlamydia trachomatis biovar LGV</p> Signup and view all the answers

    Which bacteria is transmitted via arthropod bites?

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

    Which bacteria causes lymphogranuloma venereum?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species is a common respiratory pathogen causing atypical pneumonia?

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

    Which of the following bacterial infections is resistant to peptidoglycan inhibitors?

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

    Which bacterial species is transmitted by arthropod bites and causes Rocky Mountain spotted fever?

    <p>Rickettsia rickettsii</p> Signup and view all the answers

    Which bacteria is diagnosed through serology or nucleic acid amplification tests?

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

    Which bacterial species is a leading cause of preventable blindness worldwide?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is responsible for causing psittacosis?

    <p>Chlamydia psittaci</p> Signup and view all the answers

    Which bacterial STD is a leading cause of ectopic pregnancies and infertility in women in the US?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial infection is diagnosed through culture, direct fluorescent antibody test, and nucleic acid amplification tests (PCR)?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is known to cause urogenital infections?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species causes urogenital infections?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species is a leading bacterial STD globally?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is a leading cause of preventable blindness worldwide?

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

    Which bacterial species is diagnosed through culture, direct fluorescent antibody test, and nucleic acid amplification tests (PCR)?

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

    Which bacterial species is diagnosed through culture, direct fluorescent antibody test, and nucleic acid amplification tests (PCR)?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America?

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

    Which bacteria is the smallest free-living bacteria without a cell wall?

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

    Which bacterial infection is characterized by being the smallest free-living bacteria without a cell wall?

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

    Which bacterial infection is transmitted via inhalation of dried excrement, urine, or respiratory secretions of infected birds?

    <p>Chlamydia psittaci</p> Signup and view all the answers

    Which bacterial species is a leading cause of preventable blindness worldwide?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species is acquired via inhalation of dried excrement, urine, or respiratory secretions of infected birds?

    <p>Chlamydia psittaci</p> Signup and view all the answers

    Which bacteria is known to cause ocular trachoma?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is the most common cause of ectopic pregnancies and infertility in women in the US?

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

    Which bacteria is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial infection is a common respiratory pathogen causing atypical pneumonia?

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

    Which bacterial species is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacterial species is diagnosed through serology or nucleic acid amplification tests, and treated with erythromycin, doxycycline, or newer fluoroquinolones?

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

    Which bacteria is transmitted via inhalation of dried excrement, urine, or respiratory secretions of infected birds?

    <p>Chlamydia psittaci</p> Signup and view all the answers

    Which bacterial species is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America, and is associated with poor sanitation and hygiene, and crowded living conditions?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which bacteria is the leading bacterial STD globally?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Which of the following bacteria has no peptidoglycans in their cell wall?

    <p>Mycoplasma and Ureaplasma</p> Signup and view all the answers

    Which bacterial species can cause psittacosis and is acquired via inhalation of dried excrement, urine, or respiratory secretions of infected birds?

    <p>Chlamydia psittaci</p> Signup and view all the answers

    Which bacterial infection is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America?

    <p>Chlamydia trachomatis</p> Signup and view all the answers

    Study Notes

    • Mycoplasma are the smallest free-living bacteria, without a cell wall and resistant to antibiotics.
    • Mycoplasma pneumoniae is a common respiratory pathogen causing atypical pneumonia.
    • Rickettsia are small, Gram-negative bacilli transmitted by arthropod bites and cause diseases like Rocky Mountain spotted fever, epidemic typhus, and endemic typhus.
    • Chlamydiaceae are obligate intracellular pathogens with a unique developmental cycle, consisting of elementary and reticulate forms.
    • Chlamydia trachomatis, C. pneumoniae, and C. psittaci are medically important species causing various diseases like ocular trachoma, urogenital infections, pneumonia, and psittacosis.
    • Chlamydia trachomatis infections do not stimulate immunity and can lead to tissue damage upon re-infection.
    • Chlamydia trachomatis biovar LGV can cause lymphogranuloma venereum.
    • Mycoplasma, Rickettsia, and Chlamydiaceae are all obligate intracellular pathogens.
    • Mycoplasma and Ureaplasma are resistant to peptidoglycan inhibitors, while Chlamydiaceae have no peptidoglycans in their cell wall.
    • Diagnosis of Mycoplasma infections can be done through serology or nucleic acid amplification tests, and treatment involves erythromycin, doxycycline, or newer fluoroquinolones.
    • Chlamydia is a leading bacterial STD globally.
    • Ocular trachoma is a leading cause of preventable blindness worldwide.
    • Chlamydia is endemic in North and sub-Saharan Africa, the Middle East, southern Asia, and South America.
    • Poor sanitation and hygiene, crowded living conditions are risk factors for chlamydia.
    • Asymptomatic chlamydia infection is the most common cause of ectopic pregnancies and infertility in women in the US.
    • Chlamydia is diagnosed through culture, direct fluorescent antibody test, and nucleic acid amplification tests (PCR).
    • Peptidoglycan inhibitors are ineffective against chlamydia.
    • There is no vaccine or chemoprophylaxis for chlamydia.
    • Chlamydia pneumoniae is transmitted via respiratory secretions and can cause atypical pneumonia.
    • Psittacosis is caused by Chlamydia psittaci and is acquired via inhalation of dried excrement, urine, or respiratory secretions of infected birds.

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    Description

    Test your knowledge on the fascinating world of Mycoplasma, Rickettsia, and Chlamydiaceae with this quiz. From the smallest free-living bacteria without a cell wall to the obligate intracellular pathogens causing diseases like pneumonia, Rocky Mountain spotted fever, and chlamydia, this quiz covers it all. Learn about the unique developmental cycle of Chlamydiaceae, the resistance of Mycoplasma to antibiotics, and the risk factors for chlam

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