Question 1

Caution should be taken when culturing blood in suspected cases of Mycoplasma infections since the organism is inhibited by which anticoagulant commonly found in commercial blood culture media?

Accepted Answer

A)   Ethylenediaminetetraacetic acid (EDT
A)  
B)   Sodium polyanethol sulfonate (SPS) 
C)   Heparin
D)   Sodium citrateE) A) and D)
F) All of the above

Question 2

Media that can be used for the isolation of Mycoplasma include:

Accepted Answer

A)   Thayer-Martin agar with vitamin K.
B)   5% sheep blood and IsoVitaleX.
C)   beef or soybean protein with serum and fresh yeast extract.
D)   hemin and nicotinamide adenine dinucleotide (NA
D)   supplements.E) B) and C)
F) B) and D) C

Question 3

Which group of drugs is effective against Mycoplasma pneumoniae infections?

Accepted Answer

A)   Beta-lactams
B)   Sulfonamides
C)   Cephalosporins
D)   FluoroquinolonesE) A) and D)
F) All of the above

Question 4

The laboratory method of choice to identify Mycoplasma and Ureaplasma infections is:

Accepted Answer

A)   enzyme-linked immunosorbent assay (ELIS
A)  .
B)   direct fluorescent antibody (DF
A)  .
C)   latex agglutination.
D)   real-time polymerase chain reaction (PCR) .E) A) and C)
F) B) and D)

Question 5

Which of the following agents lacks a cell wall and is the smallest known free-living form?

Accepted Answer

A)   Chlamydia
B)   Mycoplasma
C)   Rickettsia
D)   CoxiellaE) None of the above
F) A) and B) B

Question 6

Incorporation of urea into media is used to enhance the detection of which organism?

Accepted Answer

A)   Ureaplasma urealyticum
B)   Mycoplasma pneumonia
C)   M. hominis
D)   M. genitaliumE) A) and D)
F) A) and B)

Question 7

Quality control is set up to test urea agar.M.genitalium and M.hominis are used; however, both organisms are negative for urease activity.Which one of the following statements explains these findings?

Accepted Answer

A)   The urea agar is most likely expired.
B)   The incubation time is most likely abbreviated.
C)   A technical error has occurred.
D)   These two organisms are poor choices for quality control of urea agar.E) A) and D)
F) A) and B)

Question 8

Which of the following Mycoplasma species is associated with individuals who are positive for human immunodeficiency virus (HIV) , is capable of invading human cells, and can modulate the immune system?

Accepted Answer

A)   M. pneumoniae
B)   M. genitalium
C)   M. hominis
D)   M. fermentansE) B) and C)
F) None of the above

Question 9

The natural habitat of Mycoplasma spp., which causes infectious disease in humans, can best be described as the:

Accepted Answer

A)   mucous membranes of humans.
B)   aquatic environment.
C)   natural environment.
D)   genitourinary tract of animals.E) All of the above
F) C) and D)

Question 10

The definitive identification of which of the following organisms is accomplished by hemadsorption techniques?

Accepted Answer

A)   Chlamydia trachomatis
B)   Mycoplasma hominis
C)   Mycoplasma pneumoniae
D)   Mycoplasma genitaliumE) A) and B)
F) A) and C) C

Exam 44: Cell Walldeficient Bacteria: Mycoplasma and Ureaplasma

Caution should be taken when culturing blood in suspected cases of Mycoplasma infections since the organism is inhibited by which anticoagulant commonly found in commercial blood culture media?

Correct Answer
verified

Media that can be used for the isolation of Mycoplasma include:

Correct Answer
verified
C

Which group of drugs is effective against Mycoplasma pneumoniae infections?

Correct Answer
verified

The laboratory method of choice to identify Mycoplasma and Ureaplasma infections is:

Correct Answer
verified

Which of the following agents lacks a cell wall and is the smallest known free-living form?

Correct Answer
verified
B

Incorporation of urea into media is used to enhance the detection of which organism?

Correct Answer
verified

Quality control is set up to test urea agar.M.genitalium and M.hominis are used; however, both organisms are negative for urease activity.Which one of the following statements explains these findings?

Correct Answer
verified

Which of the following Mycoplasma species is associated with individuals who are positive for human immunodeficiency virus (HIV) , is capable of invading human cells, and can modulate the immune system?

Correct Answer
verified

The natural habitat of Mycoplasma spp., which causes infectious disease in humans, can best be described as the:

Correct Answer
verified

The definitive identification of which of the following organisms is accomplished by hemadsorption techniques?

Correct Answer
verified
C

Exam 44: Cell Walldeficient Bacteria: Mycoplasma and Ureaplasma

Caution should be taken when culturing blood in suspected cases of Mycoplasma infections since the organism is inhibited by which anticoagulant commonly found in commercial blood culture media?

Correct AnswerverifiedShow Answer

Media that can be used for the isolation of Mycoplasma include:

Correct AnswerverifiedC

Which group of drugs is effective against Mycoplasma pneumoniae infections?

Correct AnswerverifiedShow Answer

The laboratory method of choice to identify Mycoplasma and Ureaplasma infections is:

Correct AnswerverifiedShow Answer

Which of the following agents lacks a cell wall and is the smallest known free-living form?

Correct AnswerverifiedB

Incorporation of urea into media is used to enhance the detection of which organism?

Correct AnswerverifiedShow Answer

Quality control is set up to test urea agar.M.genitalium and M.hominis are used; however, both organisms are negative for urease activity.Which one of the following statements explains these findings?

Correct AnswerverifiedShow Answer

Which of the following Mycoplasma species is associated with individuals who are positive for human immunodeficiency virus (HIV) , is capable of invading human cells, and can modulate the immune system?

Correct AnswerverifiedShow Answer

The natural habitat of Mycoplasma spp., which causes infectious disease in humans, can best be described as the:

Correct AnswerverifiedShow Answer

The definitive identification of which of the following organisms is accomplished by hemadsorption techniques?

Correct AnswerverifiedC

Correct Answer
verified

Correct Answer
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C

Correct Answer
verified

Correct Answer
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Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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C