Microbiology Test 2

Media used to support growth of Legionella pneumophila should contain the additives:

The best medium for culture of Bordetella pertussis is:

A 21-year-old patient presents with pharyngitis. A throat swab is collected and submitted for anaerobic culture. This specimen should be:

An antibiotic used to suppress or kill contaminating fungi in media is:

A sputum specimen is received for culture and Gram stain. The Gram-stained smear from this specimen is seen in the image (total magnification 100x):

The technologist’s best course of action would be to:

A vaginal/rectal swab is collected from a pregnant patient to screen for group B Streptococcus colonization. The best medium to inoculate the specimen to is:

When processing a patient specimen for Gram stain and culture, the proper use of a biological safety cabinet includes:

A wound specimen grows 2 colony types on sheep blood agar and 1 clear colony type on MacConkey agar. Sheep blood agar growth is documented as:

• colony type #1 swarming over entire plate, Gram stain: gram-negative bacilli
• colony type #2 white colony, Gram stain: gram-positive cocci in clusters

The best way to isolate colony type #2 from colony type #1 is to subculture:

A differential medium that can be used as a primary isolation agar producing predictable colored colonies that can be distinguished from other organism colony types describes:

Anticoagulants acceptable for use with blood, bone marrow and synovial fluid specimens that are to be cultured include:

Appropriate culture requirements for a specimen from a patient suspected of having tularemia include:

The primary isolation of Neisseria gonorrhoeae requires:

Acceptable specimen sources for culture of anaerobic bacteria includes:

In general, anaerobic infections differ from aerobic infections in which one of the following?

An expectorated sputum is sent to the laboratory for culture from a patient with respiratory distress. The direct specimen Gram stain shows many squamous epithelial cells (>25/lpf) and rare neutrophils. The microscopic appearance of the organisms present include:

• moderate gram-positive cocci in chains and diplococci
• moderate gram-negative diplococci
• moderate palisading gram-positive bacilli all in moderate amounts

This Gram stain is most indicative of:

Upon review of a sputum Gram stain, the technician notes that all the neutrophil nuclei in the smear stained dark blue. The best explanation for this finding is the:

The image depicts a Gram stain (final magnification 1000x) of a knee fluid from a patient who has recently undergone knee replacement surgery:

The best interpretation of this Gram stain is:

The principle difference between the Ziehl-Neelsen acid-fast stain technique and the Kinyoun acid-fast stain technique is the:

Relapsing fever in humans is caused by:

Three sets of blood cultures are obtained from an adult patient with fever and suspected endocarditis. Growth in one aerobic bottle is seen after 5 days incubation, and the Gram stain is seen in the image. This indicates that: