Question 1

Which of the following organisms was once called "T-strain mycoplasma"?

Accepted Answer

A)  Ureaplasma spp. 
B)  Mycoplasma hominis 
C)  Mycoplasma fermentans 
D)  Mycoplasma orale 
A)  Ureaplasma spp. 
B)  Mycoplasma hominis 
C)  Mycoplasma fermentans 
D)  Mycoplasma orale A

Question 2

Mycoplasma sp.from patient samples are visible by which staining technique?

Accepted Answer

A)  Gram stain 
B)  Methylene Blue 
C)  Acridine orange 
D)  All of the above 
A)  Gram stain 
B)  Methylene Blue 
C)  Acridine orange 
D)  All of the above C

Question 3

One of the factors that allows Mycoplasma to infect the respiratory tract and the urogenital tract is that:

Accepted Answer

A)  The body has a hard time detecting their presence because they have no cell wall. 
B)  They are virulent organisms. 
C)  They adhere to the epithelium of mucosal surfaces and are not eliminated by mucus secretions. 
D)  All of the above. 
A)  The body has a hard time detecting their presence because they have no cell wall. 
B)  They are virulent organisms. 
C)  They adhere to the epithelium of mucosal surfaces and are not eliminated by mucus secretions. 
D)  All of the above. C

Question 4

What disease causes the condition primary atypical pneumonia?

Accepted Answer

A)  Mycoplasma hominis 
B)  M. urealyticum 
C)  M. fermentans 
D)  M. pneumoniae 
A)  Mycoplasma hominis 
B)  M. urealyticum 
C)  M. fermentans 
D)  M. pneumoniae

Question 5

Mycoplasmas are a different type of bacteria because they do not have a _____.

Accepted Answer

A)  Cell wall 
B)  Cell membrane 
C)  Nuclear membrane 
D)  Messenger transporter 
A)  Cell wall 
B)  Cell membrane 
C)  Nuclear membrane 
D)  Messenger transporter

Question 6

What organism has been recovered in normal,sexually active females but is associated with chorioamnionitis,congenital pneumonia,and development of chronic lung disease in premature infants?

Accepted Answer

A)  Mycoplasma hominis 
B)  Ureaplasma ureolyticus 
C)  M. penetrans 
D)  M. fermentans 
A)  Mycoplasma hominis 
B)  Ureaplasma ureolyticus 
C)  M. penetrans 
D)  M. fermentans

Question 7

Cultures for Mycoplasma pneumoniae should be incubated for _____.

Accepted Answer

A)  2 to 3 days 
B)  5 to 7 days 
C)  10 to 14 days 
D)  21 days or more 
A)  2 to 3 days 
B)  5 to 7 days 
C)  10 to 14 days 
D)  21 days or more

Question 8

When Mycoplasma hominis invades the upper genitourinary tract,it can cause the following?

Accepted Answer

A)  Salpingitis 
B)  Pyelonephritis 
C)  Pelvic inflammatory disease 
D)  All of the above 
A)  Salpingitis 
B)  Pyelonephritis 
C)  Pelvic inflammatory disease 
D)  All of the above

Question 9

What time frame is suitable for blood draws to diagnose Mycoplasma infections?

Accepted Answer

A)  Onset of symptoms and 2 to 3 weeks later 
B)  Week after symptoms start and 2 months later 
C)  Weeks after symptoms start and 3 months later 
D)  Onset of symptoms and 2 months later 
A)  Onset of symptoms and 2 to 3 weeks later 
B)  Week after symptoms start and 2 months later 
C)  Weeks after symptoms start and 3 months later 
D)  Onset of symptoms and 2 months later

Question 10

What two organisms are associated with urogenital tract infections but have also been isolated from asymptomatic individuals?

Accepted Answer

A)  Mycoplasma hominis and Ureaplasma urealyticum 
B)  M. hominis and M. fermentans 
C)  U. urealyticum and M. pneumoniae 
D)  M. penetrans and M. pneumoniae 
A)  Mycoplasma hominis and Ureaplasma urealyticum 
B)  M. hominis and M. fermentans 
C)  U. urealyticum and M. pneumoniae 
D)  M. penetrans and M. pneumoniae

Question 11

When transporting specimens for Mycoplasma culture to the laboratory,extreme care must be taken so that the specimen does not:

Accepted Answer

A)  Become contaminated 
B)  Leak from the specimen container 
C)  Become overgrown with bacterial normal florae 
D)  Dry out 
A)  Become contaminated 
B)  Leak from the specimen container 
C)  Become overgrown with bacterial normal florae 
D)  Dry out

Question 12

Which factor is added to media to provide cholesterol for mycoplasma-like organisms?

Accepted Answer

A)  Trypticase soy digest 
B)  20% fetal calf serum 
C)  X and V factor supplement 
D)  5% sheep blood 
A)  Trypticase soy digest 
B)  20% fetal calf serum 
C)  X and V factor supplement 
D)  5% sheep blood

Question 13

Which of the following methods is used to determine the presence of growth in mycoplasma broth media?

Accepted Answer

A)  Broth turbidity 
B)  Presence of biofilm on surface 
C)  Change in phenol red pH indicator 
D)  Release of radiolabeled CO₂ 
A)  Broth turbidity 
B)  Presence of biofilm on surface 
C)  Change in phenol red pH indicator 
D)  Release of radiolabeled CO₂

Question 14

If a newborn has symptoms of meningitis but the cerebrospinal fluid (CSF)is negative for both Gram stain and a routine culture,what organisms should be suspected?

Accepted Answer

A)  Neisseria gonorrhea and Chlamydia trachomatis 
B)  Treponema pallidum and Borrelia burgdorferi 
C)  Mycoplasma hominis and Ureaplasma urealyticum 
D)  M. pneumoniae and C. trachomatis 
A)  Neisseria gonorrhea and Chlamydia trachomatis 
B)  Treponema pallidum and Borrelia burgdorferi 
C)  Mycoplasma hominis and Ureaplasma urealyticum 
D)  M. pneumoniae and C. trachomatis

Question 15

Mycoplasma organisms will grow in which of the following atmospheres?

Accepted Answer

A)  Ambient 
B)  Capnophilic 
C)  Anaerobic 
D)  All of the above 
A)  Ambient 
B)  Capnophilic 
C)  Anaerobic 
D)  All of the above

Question 16

At-risk groups for contracting walking pneumonia include all the following EXCEPT:

Accepted Answer

A)  Prisoners 
B)  College students 
C)  Military personnel 
D)  Very young children 
A)  Prisoners 
B)  College students 
C)  Military personnel 
D)  Very young children

Question 17

Which antibiotic is added to mycoplasma isolation and transport media to minimize bacterial contamination?

Accepted Answer

A)  Tetracycline 
B)  Penicillin 
C)  Erythromycin 
D)  Gentamicin 
A)  Tetracycline 
B)  Penicillin 
C)  Erythromycin 
D)  Gentamicin

Question 18

All the following antibiotics are used to treat mycoplasma infections EXCEPT:

Accepted Answer

A)  Macrolides 
B)  Fluoroquinolones 
C)  Tetracyclines 
D)  Penicillin 
A)  Macrolides 
B)  Fluoroquinolones 
C)  Tetracyclines 
D)  Penicillin

Question 19

What test method is used to detect antibodies to Mycoplasma spp.?

Accepted Answer

A)  Complement fixation (CF) 
B)  Enzyme immunoassay (EI
A)  
C)  Direct fluorescent antibody (DF
A)  
D)  Cellulose ion exchange (CI
E)  
A)  Complement fixation (CF) 
B)  Enzyme immunoassay (EI
A)  
C)  Direct fluorescent antibody (DF
A)  
D)  Cellulose ion exchange (CI
E)

Question 20

Which of the following stains is used to enhance the visibility of mycoplasma-like colonies?

Accepted Answer

A)  Gram stain 
B)  Acridine orange 
C)  Dienes stain 
D)  Wright stain 
A)  Gram stain 
B)  Acridine orange 
C)  Dienes stain 
D)  Wright stain

Exam 25: Mycoplasma and Ureaplasma

Which of the following organisms was once called "T-strain mycoplasma"?

Mycoplasma sp.from patient samples are visible by which staining technique?

One of the factors that allows Mycoplasma to infect the respiratory tract and the urogenital tract is that:

What disease causes the condition primary atypical pneumonia?

Mycoplasmas are a different type of bacteria because they do not have a _____.

What organism has been recovered in normal,sexually active females but is associated with chorioamnionitis,congenital pneumonia,and development of chronic lung disease in premature infants?

Cultures for Mycoplasma pneumoniae should be incubated for _____.

When Mycoplasma hominis invades the upper genitourinary tract,it can cause the following?

What time frame is suitable for blood draws to diagnose Mycoplasma infections?

What two organisms are associated with urogenital tract infections but have also been isolated from asymptomatic individuals?

When transporting specimens for Mycoplasma culture to the laboratory,extreme care must be taken so that the specimen does not:

Which factor is added to media to provide cholesterol for mycoplasma-like organisms?

Which of the following methods is used to determine the presence of growth in mycoplasma broth media?

If a newborn has symptoms of meningitis but the cerebrospinal fluid (CSF)is negative for both Gram stain and a routine culture,what organisms should be suspected?

Mycoplasma organisms will grow in which of the following atmospheres?

At-risk groups for contracting walking pneumonia include all the following EXCEPT:

Which antibiotic is added to mycoplasma isolation and transport media to minimize bacterial contamination?

All the following antibiotics are used to treat mycoplasma infections EXCEPT:

What test method is used to detect antibodies to Mycoplasma spp.?

Which of the following stains is used to enhance the visibility of mycoplasma-like colonies?

Bacterial Cell Structure, physiology, Metabolism, and Genetics

Host-Parasite Interaction

Laboratory Role in Infection Control

Control of Microorganisms

Performance Improvement in the Microbiology Laboratory

Specimen Collection and Processing

Microscopic Examination of Infected Materials

Use of Colonial Morphology for the Presumptive Identification of Microorganisms

Biochemical Identification of Gram-Negative Bacteria

Immunodiagnosis of Infectious Diseases

Applications of Molecular Diagnostics

Antibiotic Mechanisms of Action and Resistance

Antimicrobial Susceptibility Testing

Staphylococci

Streptococcus, enterococcus, and Other Catalase-Negative Gram-Positive Cocci

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio,aeromonas,plesiomonas and Campylobacter Species

Nonfermenting and Miscellaneous Gram-Negative Bacilli

Anaerobes of Clinical Importance

Spirochetes

Chlamydia and Rickettsia

Mycobacterium Tuberculosis and Other Nontuberculosis Mycobacteria

Medically Significant Fungi

Diagnostic Parasitology

Clinical Virology

Agents of Bioterror

Biofilms: Architects of Disease

Upper and Lower Respiratory Tract Infections

Skin and Soft Tissue Infections

Gastrointestinal Infections and Food Poisoning

Infections of the Central Nervous System

Bacteremia and Sepsis

Urinary Tract Infections

Genital Infections and Sexually Transmitted Diseases

Infections in Special Populations

Zoonotic Diseases

Ocular Infections

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