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USMLE Exam Prep

Category - Free USMLE Practice Test Questions

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Which bacteria are gram-positive cocci?

Streptococcus spp
Staphylococcus spp
Streptococcus spp. and Staphylococcus spp
Veillonella spp. and Bacteroides spp

Explanation

Answer: C - Aerobic and Anaerobic bacteria are common in oral infections. Streptococcus spp. and Staphylococcus spp. are gram-positive cocci. The spread of infection depends on virulence of bacteria, anatomic location, and host defenses.

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