Apr 1 • Multiple choice answers
🧪 Answer Reveal: Poll Recall Question of the Day
Question:
Which organism is bacitracin sensitive and PYR positive?
✅ Correct Answer:
B) Streptococcus pyogenes
🧠 Explanation:
Streptococcus pyogenes (Group A Strep) is:
• Bacitracin sensitive 🟢
• PYR positive 🧪
This combination is a classic identification clue used in the lab.
🔬 What about the other options?
A) Staphylococcus aureus ❌
• Catalase positive, coagulase positive
• NOT identified using bacitracin or PYR in this way
C) Streptococcus agalactiae ❌
• Bacitracin resistant
• PYR negative
• Identified using CAMP test instead
💡 Quick Recall Tip:
🔥 “PYR = PYOGENES”
👉 If it’s PYR positive → think Strep pyogenes
🟢 Bacitracin sensitive = Group A Strep
👇 Did you get it right?
Drop a 🔥 if you did!
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🧪 Answer Reveal: Poll Recall Question of the Day
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