Which of the following is a selective media?  (1.35)

What Gram positive organism is a common cause of urinary tract infections in young, sexually-active females?  (4.7)

The organization that implements policy to protect workers from safety concerns, including those caused by infectious agents is: (1.25)

What enriched medium contains hemolyzed red blood cells, which allows for the release of X (hemin) and V (NAD) factors?  (1.35; 2.14)

Escherichia coli can have many serotypes that cause different diseases.  O157:H7 is recognized as causing hemolytic uremic syndrome (HUS) and can be isolated and differentiated by inoculating _______ agar. (7.7)

Which of the following is NOT an antimicrobial mechanism of action? (16.1)

The main difference between Gram positive and Gram negative bacteria is that Gram positive bacteria have a thick layer of ________ that enables the bacteria to retain the primary stain.  (1.4)

Match the following organisms to their correct Lancefield group antigen classification: 

Which of the following designates antigens found on bacterial flagellum? (7.6)

What do the pink colonies on MacConkey agar indicate?  (1.35)