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What antigen can be detected on the surface of Staphylococcus aureus using the latex agglutination test?

The cephalosporin antibiotic Nitrocephin is used to detect the presence of the enzyme that inactivates penicillin/cephalosprin-class antibiotics. What does a positive test for this enzyme look like?

What is the primary reason health care providers desire a faster test result turnaround-time (TAT)?

The oxidase test is important for identifying what medically relevant genus?

What indicator do we use to test for the presence of the protein “coagulase” in bacteria?

What is the primary reason health care providers desire a faster test result turnaround-time (TAT)?

Seven broth tubes are set up with concentrations of ampicillin (an antibiotic) at concentrations of 128, 64, 32, 16, 8, 4, and 2μg/ml. The broth is inoculated with 0.1 ml of a suspension of E. coli at a standardized concentration. After incubation for 24 hours at 37°C, turbidity is seen in tubes containing 8μg/ml or lower of ampicillin. Tubes containing 16μg/ml or higher are free from bacterial growth. What is the minimum inhibitory concentration (MIC) of ampicillin for E. coli?

Streptococcus and Staphylococcus are both:

Which of the following are ways that some bacteria can be resistant to disinfectants?

Which property of a bacterial broth culture is used to determine the approximate concentration of bacteria (in CFU/mL)?