What does dimorphic mean?

Which organism produces urease to breakdown urea to ammonia, neutralizes the stomach pH, and causes ulcers?

A gram stain performed on a sinus aspirate revealed gram negative diplococci. Oxidase testing is positive and the carbohydrate testing is negative. The organism is most likely:

What is the catalase result for Staphylococcus sp?

What is an obligate/strict anaerobe?

A 21-year-old patient presents with pharyngitis. A throat swab is collected and submitted for anaerobic culture. This specimen should be:

In the disk diffusion method of determining antibiotic susceptibility, the size of the inhibition zone used to indicate susceptibility is determined by:

All of the following are ways to identify viruses EXCEPT:

Which organism is susceptible to optochin?

Upon review of a sputum gram stain, the technician notes that all the neutrophil nuclei in the smear are stained dark purple. The best explanation for this finding is: