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Terms in this set (44)
A drug targets chitin. Which type of pathogen should this drug be effective against?
fungi
A pathogen that has chitin in its cell wall would also have _________.
ergosterol
A person has a suspected lung infection. A sputum sample is Gram stained, but no bacteria are visible. However, bacterial colonies do grow after a prolonged incubation. The patient is successfully treated with an antibiotic regimen that includes isoniazid. Why were no bacteria visible after the initial staining reaction?
Mycolic acids in the wall of this pathogen resist uptake of the Gram stain.
Students identified RSV and influenza as possible causes of Uncle Luis' lung infection. In terms of characteristics used to classify viruses, what distinguishes these two viruses?
Genome structure
The following can be distinguished by their genome structure and composition:_____ and _____.
Respiratory syncytial virus
influenza virus
influenza virus
The following can be identified using a Gram stain:_______.
Legionella pneumophila
The following can be distinguished by their cell wall structure ____ and _____ .
mycobacterium tuberculosis
coccidioides immitis
coccidioides immitis
The following can be distinguished by their rRNA sequence: ____ , _____ , and ______ .
mycobacterium tuberculosis
legionella pneumophila
coccidioides immitis
legionella pneumophila
coccidioides immitis
A characteristic symptom of necrotizing fasciitis is that the pain __________.
is disproportionate to the appearance of the infection
Which of the following bacteria is the primary cause of necrotizing fasciitis?
Streptococcus pyogenes
One of the virulence factors produced by Group A Streptococcus is __________, which can kill neutrophils, the immune system's first responders.
streptolysin S
__________ is an antiphagocytic factor and helps S. pyogenes attach to nose and throat cells.
M protein
What percent of patients are estimated to die from the disease?
20%
Why is necrotizing fasciitis so difficult to prevent?
It is part of the normal microbiota.
Based on the observations given, what is the probable diagnosis made by the health care provider?
erysipelas