Streptococcus pyogenes Group ____ strep?

Study for the NBEO Microbiology Test. Understand intricate microbiology concepts with flashcards and multiple choice questions, each question provides hints and detailed explanations. Get ready for your test effectively!

Multiple Choice

Streptococcus pyogenes Group ____ strep?

Explanation:
Streptococcus pyogenes is classified as Group A streptococcus because Lancefield grouping uses a specific carbohydrate in the cell wall to categorize beta-hemolytic streptococci. This grouping identifies S. pyogenes with Group A, setting it apart from other groups. In the lab, Group A strep often shows beta-hemolysis on blood agar and is typically bacitracin sensitive and PYR positive, which helps confirm its identity. Group B includes Streptococcus agalactiae (neonatal infections), while Groups C and D refer to other streptococcal species, not S. pyogenes. So the blank is Group A.

Streptococcus pyogenes is classified as Group A streptococcus because Lancefield grouping uses a specific carbohydrate in the cell wall to categorize beta-hemolytic streptococci. This grouping identifies S. pyogenes with Group A, setting it apart from other groups. In the lab, Group A strep often shows beta-hemolysis on blood agar and is typically bacitracin sensitive and PYR positive, which helps confirm its identity. Group B includes Streptococcus agalactiae (neonatal infections), while Groups C and D refer to other streptococcal species, not S. pyogenes. So the blank is Group A.

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