Mycoplasma Characteristics Quiz

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Questions and Answers

What is a distinguishing characteristic of Mycoplasma in terms of its cell wall?

  • Possesses flagella and pilli
  • Contains peptidoglycan
  • Has a trilaminar membrane with sterols (correct)
  • Requires cholesterol for growth

How do Mycoplasma species differ from viruses?

  • Require cholesterol for growth
  • Smaller in size
  • Contain both RNA and DNA (correct)
  • Have flagella for motility

Which staining method can be used effectively for Mycoplasma?

  • Acid-fast stain
  • Gram stain
  • Giemsa stain (correct)
  • Ziehl-Neelsen stain

What type of motility is exhibited by Mycoplasma?

<p>Gliding motility (C)</p>
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Which statement is true regarding Mycoplasma shapes?

<p>May appear coccoid, pear-shaped, or filamentous (C)</p>
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Which staining method is used for Mycoplasma identification?

<p>Dienes stain (C)</p>
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What is the optimum temperature range for the growth of Mycoplasma?

<p>35-37°C (A)</p>
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What is the characteristic shape of Mycoplasma colonies on agar plates?

<p>Invisible colonies (A)</p>
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Which of the following Mycoplasma species causes primary atypical pneumonia in humans?

<p>Mycoplasma pneumoniae (B)</p>
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Which component is required by Mycoplasma for growth?

<p>Sterols (B)</p>
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What is the appearance of Mycoplasma colonies on agar plates after 2-6 days of incubation?

<p>Biphasic colonies (C)</p>
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What is the size of a Mycoplasma cell?

<p>0.1 micron (D)</p>
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Which Mycoplasma type does not require cholesterol for growth but can incorporate it into the membrane?

<p>Acholeplasma (A)</p>
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What is a characteristic of Mycoplasma cell structure?

<p>Lacks a cell wall around its cell membrane (B)</p>
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Which species of Mycoplasma is believed to be involved in pelvic inflammatory disease?

<p>M.genitalium (A)</p>
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What staining method is typically used for Mycoplasma detection?

<p>Mycoplasmas are difficult to stain (C)</p>
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In what type of environments can Mycoplasmas be commonly found?

<p>In hot springs and sewage water (C)</p>
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