Mycoplasmas Aishath Majidha Hassan Objectives
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Questions and Answers

Which bacterial species is the smallest free-living bacteria?

  • Ureaplasma urealyticum
  • Mycoplasma genitalium (correct)
  • Mycoplasma pneumoniae
  • Mycoplasma hominis

What characteristic makes mycoplasmas highly fastidious?

  • Ability to grow on simple media
  • Large genome size
  • Presence of many metabolic pathways
  • Lack of many metabolic pathways (correct)

Which genus is facultative anaerobe except for one species?

  • Mycoplasmataceae
  • Mycoplasma (correct)
  • Ureaplasma
  • Mollicutes

Among the listed genera, which one requires complex media for isolation?

<p>Mycoplasma (B)</p> Signup and view all the answers

What distinguishes mycoplasmas in terms of genome size compared to other bacteria?

<p>They have the smallest genome (D)</p> Signup and view all the answers

Which of the following statements about Mycoplasma pneumoniae is true?

<p>It is a strict pathogen that causes upper respiratory tract disease. (A)</p> Signup and view all the answers

What is the primary virulence factor of Mycoplasma pneumoniae?

<p>Adherence proteins like P1 adhesin (A)</p> Signup and view all the answers

What is the result of Mycoplasma pneumoniae colonization in the respiratory tract?

<p>Ciliostasis and destruction of epithelial cells (C)</p> Signup and view all the answers

Which of the following statements about the epidemiology of Mycoplasma pneumoniae is false?

<p>It is more prevalent in tropical regions. (B)</p> Signup and view all the answers

Which of the following organisms is associated with non-gonococcal urethritis and spontaneous abortions?

<p>Ureaplasma urealyticum (B)</p> Signup and view all the answers

What is a characteristic feature of Mycoplasma species?

<p>They lack sterols in their cell membrane. (A)</p> Signup and view all the answers

How are Mycoplasma species typically diagnosed in the laboratory?

<p>Serology (ELISA, cold agglutinins, complement fixation test) (A)</p> Signup and view all the answers

Which of the following statements about the clinical manifestations of Mycoplasma pneumoniae infection is true?

<p>The incubation period is typically 2 to 3 weeks. (A)</p> Signup and view all the answers

Which of the following statements about the colonization of Mycoplasma hominis and Ureaplasma urealyticum is false?

<p>Carriers are always symptomatic. (C)</p> Signup and view all the answers

What is a requirement for the growth and membrane synthesis of Mycoplasma species?

<p>Presence of sterols (B)</p> Signup and view all the answers

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