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All of the following statements regarding the hyaluronic acid capsule of S. pyogenes are correct except

A. It is responsible for the mucoid appearance of the colonies in vitro
B. It is antiphagocytic
C. It binds to CD44 on human epithelial cells
D. It is an important virulence factor
E. A vaccine against the capsule is currently available

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All of the following are virulence factors associated with N. gonorrhoeae except

A. Pili
B. Por
C. Lipooligosaccharide
D. Opa proteins
E. A thick polysaccharide capsule

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Which one of the following microorganisms is closely associated with dental caries?

A. albicans
B. Streptococcus mutans
C. melaninogenica
D. Neisseria subflava
E. epidermidis

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Reversion ofNeisseria gonorrhoeae from a fimbriated (fim 1) to a non-fimbriated (fim 2) state would result in which one of the following phenomena?

A. Inability of gonorrhoeae to colonize the mucosal epithelium
B. Reversion to a Gram-positive stain
C. Death of the organism
D. Loss of serologic specificity
E. A negative capsule strain

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A 27-year-old man had a rhinoplasty. A nasal tampon was placed to control the bleeding. Approximately 8 hours later, he developed headache, muscle aches, and abdominal cramps with diarrhea. He then developed an erythematous rash (resembling sunburn) over much of his body, including the palms and soles. His blood pressure is 80/50 mm Hg. The nasal tampon remained in place. His liver enzyme tests were elevated, and there was evidence of moderate renal failure. This patient’s illness was likely to be caused by which of the following?

A. Lipopolysaccharide
B. Peptidoglycan
C. A toxin that is a superantigen
D. A toxin that has A and B subunits
E. Lecithinase (alpha toxin)

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All of the following statements regarding the hyaluronic acid capsule of S. pyogenes are correct except

A. It is responsible for the mucoid appearance of the colonies in vitro B. It is antiphagocytic C. It binds to CD44 on human epithelial cells D. It is an important virulence factor E. A vaccine against the capsule is currently available

All of the following are virulence factors associated with N. gonorrhoeae except

Which one of the following microorganisms is closely associated with dental caries?

Reversion ofNeisseria gonorrhoeae from a fimbriated (fim 1) to a non-fimbriated (fim 2) state would result in which one of the following phenomena?

A. It is responsible for the mucoid appearance of the colonies in vitro
B. It is antiphagocytic
C. It binds to CD44 on human epithelial cells
D. It is an important virulence factor
E. A vaccine against the capsule is currently available