11. RTI-3 Flashcards
A microbiologist is testing a sample from a patient who was complaining of a sore throat and cough. Testing showed noticeable swelling of the of the capsule. What organism is the microbiologist examining?
A.S. pyogenes B. S. mutans C. Corynebacterium D. H.influenzae E. S. pneumoniae
RFA
Ans. S. pneumoniae
A scientist is studying a culture that requires chocolate agar to grow what else is true of this organism?
A. Is Catalase and Coagulase positive B. Capsule composed of PRP C. Is prevented with the Tdap vaccine D. Volutin produced on Loeffler serum E. Has M protein in its cell wall
RFA
RFA
Ans. B- H. influenzae grows on chocolate agar ( also with hemin( factor X) and NAD(factor V) and its capsule is composed of PRP
A. H. influenza is Coagulase negative and catalase positive, (Stap is postive postive)
C. That would be diphtheria
D. This is also diphtheria
E. This is strep.
A 10 y/o unvaccinated boy presents with a bacterial illness. The sample is cultured and found to gram +, rod, nonspore forming aerobic, with volutin granules. Which of the following symptoms/characteristics may be present?
A. Tripod positioning B. Bad breath C. Ear pulling D. Thick pseudomembrane over pharynx E. Thumb sign on XR
SZ
Ans. D. Thick pseudomembrane over pharynx
The boy is exhibiting corynebacterium diphtheriae
A 10 y/o unvaccinated boy presents with a bacterial illness. The sample is cultured and found to gram +, rod, nonspore forming aerobic, with volutin granules. Which of the following is component of the bacteria’s toxicity?
A. Streptolysis S & O B. M proteins C. P-2 outer membrane protein D. Toxin A which deactivated EF-2 E. Toxin B which deactivates EF-2
SZ
Ans. D. Toxin A which deactivated EF-2
The boy is exhibiting corynebacterium diphtheriae which has Toxin A & B.
Toxin A deactivated EF-2 and B helps with attachment and entry of part A.
Streptolysis S & O and M proteins are characteristics of S. pyogenes.
P-2 outer membrane protein = H. influenza
