Q. What is a common source of Streptococcus pneumoniae infection?
-
A.
Contaminated water
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B.
Airborne droplets
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C.
Foodborne transmission
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D.
Vector-borne transmission
Solution
Streptococcus pneumoniae is commonly transmitted through airborne droplets.
Correct Answer:
B
— Airborne droplets
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Q. What is the first-line treatment for a confirmed Streptococcus pyogenes infection?
-
A.
Amoxicillin
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B.
Azithromycin
-
C.
Penicillin
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D.
Ciprofloxacin
Solution
Penicillin is the first-line treatment for a confirmed Streptococcus pyogenes infection.
Correct Answer:
C
— Penicillin
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Q. What is the primary pathogenic species of Streptococcus responsible for strep throat?
-
A.
Streptococcus pneumoniae
-
B.
Streptococcus pyogenes
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C.
Streptococcus agalactiae
-
D.
Streptococcus mitis
Solution
Streptococcus pyogenes is the primary pathogenic species responsible for strep throat.
Correct Answer:
B
— Streptococcus pyogenes
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Q. What is the primary virulence factor of Streptococcus pyogenes?
-
A.
Capsule
-
B.
M protein
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C.
Exotoxins
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D.
Lipoteichoic acid
Solution
The primary virulence factor of Streptococcus pyogenes is the M protein.
Correct Answer:
B
— M protein
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Q. What type of hemolysis is exhibited by Streptococcus pyogenes on blood agar?
-
A.
Alpha hemolysis
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B.
Beta hemolysis
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C.
Gamma hemolysis
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D.
Delta hemolysis
Solution
Streptococcus pyogenes exhibits beta hemolysis on blood agar.
Correct Answer:
B
— Beta hemolysis
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Q. Which of the following is a characteristic feature of Streptococcus agalactiae?
-
A.
Group A strep
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B.
Group B strep
-
C.
Alpha hemolytic
-
D.
Optochin sensitive
Solution
Streptococcus agalactiae is classified as Group B strep.
Correct Answer:
B
— Group B strep
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Q. Which of the following is a common complication of untreated Streptococcus pyogenes infection?
-
A.
Rheumatic fever
-
B.
Pneumonia
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C.
Meningitis
-
D.
Sepsis
Solution
Rheumatic fever is a common complication of untreated Streptococcus pyogenes infection.
Correct Answer:
A
— Rheumatic fever
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Q. Which population is at highest risk for severe disease caused by Streptococcus pneumoniae?
-
A.
Healthy adults
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B.
Children under 5
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C.
Elderly individuals
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D.
Pregnant women
Solution
Elderly individuals are at the highest risk for severe disease caused by Streptococcus pneumoniae.
Correct Answer:
C
— Elderly individuals
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Q. Which test is commonly used to identify Streptococcus pyogenes in the laboratory?
-
A.
Catalase test
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B.
Coagulase test
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C.
Rapid antigen test
-
D.
Oxidase test
Solution
The rapid antigen test is commonly used to identify Streptococcus pyogenes.
Correct Answer:
C
— Rapid antigen test
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