Mycoplasma And Ureaplasma
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- 1.Mycoplasmas are pleomorphic organisms that have a cell wall.
- A.
True
- B.
False
- 2.Why are Mycoplasma resistant to antibiotics such as penicillin and cephalosporins?
- A.
Their endotoxins makes them resistant
- B.
Their lack of a cell wall make them resistant
- C.
Their motility makes them resistant
- 3.Mycoplasma grows _____ and are highly fastidious, facultative anerobes.
- A.
Rapidly
- B.
Slowly
- 4.Mycoplasma need complex media contain _______ and _______ for growth.
- A.
Blood and hemolysin
- B.
Glucose and galactose
- C.
Cholesterol and fatty acids
- 5.Mycoplasma species grow embedded _____ the surface of the solid media.
- A.
Over
- B.
Beneath
- 6.On solid media, some species of Mycoplasma form colonies with a slightly raised center giving a "_______" appearance.
- A.
Clown
- B.
Valley-like
- C.
Fried egg
- D.
Wrinkled
- 7.M. hominis is found in the lower genitourinary tract of about half of healthy adults; not a cause of __________.
- A.
PKU
- B.
REG
- C.
NGU
- 8.Since mycoplasma organisms lack a ______, they will not stain with Gram stain.
- A.
Vacuole
- B.
Granules
- C.
Cytoplasm
- D.
Cell wall
- 9.A DNA fluorescent stain using (acridine ________) can be used but this is not specific.
- A.
Red
- B.
Blue
- C.
Orange
- D.
White
- 10.M. penumoniae requires what substrate to grow in culture?
- A.
Glucose
- B.
Arginine
- C.
Urea and media with a pH near 6.0
- 11.Mycoplasma hominis requires what substrate to grow in culture?
- A.
Glucose
- B.
Arginine
- C.
Urea and media with a pH near 6.0
- 12.Ureaplasma species requires what substrate to grow in culture?
- A.
Glucose
- B.
Arginine
- C.
Urea and media with a pH near 6.0
- 13.What is the major way M. pneumoniae is diagnosed?
- A.
PCR
- B.
Serology
- 14.What would be the best way to make a diagnosis of Mycoplasma pneumoniae?
- A.
Collect two specimens 2-3 weeks apart
- B.
Collect one specimens 1 week apart
- C.
Collected three specimens 2-3 weeks apart
- D.
Collect two specimens 7 days apart
- 15.Cold agglutininins is a sensitive and specific for Mycoplasma pneumoniae.
- A.
True
- B.
False
- 16.Most reference labs utilize the ______ fixation technique for the presence of antibodies.
- A.
Immuno-fluorescence
- B.
Radio-isotope
- C.
Complement
- 17.Due to the absence of a cell wall, Mycoplasma organisms are resistant to all Beta lactam antibiotics.
- A.
True
- B.
False
- 18.Mycoplasma pneumoniae remain susceptible to _______, newer quinolones and macrolides are used.
- A.
Tetracycline
- B.
Penicillin
- C.
Beta lactam
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