Which species of streptococcus has higher virulence?
A. Streptococcus pyogenes,
B. Streptococcus varidans,
C. Streptococcus nonhemolyticus
D. All have
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20 groups of streptococcus are classified based on ____ antigen in Lancefield classification system.
A. Capsule antigen;
B. M protein
Cell wall
D. R
Each statement is right about group A streptococcus EXCEPT___?
A. 90% pathogenic streptococcus is in Group A.
B. Most streptococci containing the group A antigen are S pyogenes.
C. Most streptococcus in Group A cause α- hemolysis.
D. Group A Streptococcus, which is synonymously known as S.pyogenes
Which following one of the streptococcal toxic molecules is not involved in dissemination of Streptococcus?
A. pyrogenic exotoxins ,
B. hyaluronidase,
C. Streptokinase,
D. streptodornase,
Which is not the virulent structure molecule of streptococcus?
A. LTA,
B. M protein,
C. capsule
D. LPS
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