Classification of Streptococcus Bacteria Quiz
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Classification of Streptococcus Bacteria Quiz

Created by
@SweepingSpessartine

Questions and Answers

Which Streptococcus species shows growth inhibition by bacitracin?

S. pyogenes

What is the most important virulence factor in Streptococcus pyogenes?

M protein

Which type of haemolysis is seen in Streptococcus pneumoniae?

Alpha-haemolytic

Which enzyme is used for emergency therapy of myocardial infarction by Streptococcus pyogenes?

<p>Streptokinase</p> Signup and view all the answers

Which Streptococcus species is associated with scarlet fever?

<p>S. pyogenes</p> Signup and view all the answers

What role do Streptococcal pyrogenic exotoxins play in infections by S. pyogenes?

<p>Act as superantigens</p> Signup and view all the answers

What is the common symptom of pharyngitis caused by S.pyogenes?

<p>Pain, redness, and swelling of posterior pharynx</p> Signup and view all the answers

Which toxin produced by S.pyogenes is responsible for causing scarlet fever?

<p>SPE-A</p> Signup and view all the answers

How is the diagnosis of pharyngitis due to S.pyogenes confirmed in the laboratory?

<p>Detection of Lancefield group A antigen using a latex agglutination test</p> Signup and view all the answers

What is the mechanism by which streptococcal M serotypes cause acute rheumatic fever?

<p>Formation of antibodies to streptococcal M protein</p> Signup and view all the answers

What type of hypersensitivity reaction is responsible for acute glomerulonephritis caused by nephritogenic streptococcal M serotypes?

<p>Type III hypersensitivity</p> Signup and view all the answers

Which age group is more commonly affected by acute rheumatic fever compared to acute glomerulonephritis?

<p>Children between 4-30 years</p> Signup and view all the answers

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