Assume that your lab partner swabs the side of his face and uses the swab to inoculate a nutrient agar plate.The next day,he performs a Gram stain on the colonies.They are gram-positive cocci.You advise him that he should next look for

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Quizplus · Accepted Answer

Gram-positive cocci can include a variety of different bacterial species, and performing a coagulase reaction can help to narrow down the possibilities. Coagulase is an enzyme produced by some species of Staphylococcus, which can cause fibrin to form around the bacteria, protecting them from the immune system. Therefore, a positive coagulase test is strongly indicative of the presence of Staphylococcus aureus, a common human pathogen. None of the other options listed would be useful for identifying gram-positive cocci in this scenario.

Assume That Your Lab Partner Swabs the Side of His