Audio Qbank – HY USMLE Q #516 – Microbiology / Infectious disease

A 27-year-old woman comes to the physician for a 1-week history of fatigue and intermittent fevers. She has no past medical history. She had her teeth cleaned one month ago. Auscultation of the chest shows a 2/6 holosystolic murmur loudest at the apex. Blood cultures are drawn. The causal organism is shown.

The causal organism will most likely demonstrate which of the following?

Coagulase production
Green zone of hemolysis on blood agar
Inhibition by bacitracin
Inhibition by optochin
Resistance to novobiocin
Susceptibility to novobiocin