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What reagent makes Pseudomonas Isolation agar differential?

A bacterium is inoculated on Pseudomonas Isolation Agar and is visible under normal light.  What pigment is visible on the plate?

What can you conclude about the culture tested on the top right?

In the nitrate reduction test, you add reagent A and B and see no color change.  You then add Zn, and still observe no color change.  The most likely explanation:

Staphylococcus aureus and Serratia marcescens are inoculated on DNAse Agar. What can you tell about this strain of Staphylococcus aureus ?

The enzyme nitrate reductase is associated with which term below?

What can you conclude about the culture tested on the top left?

Bacteria were grown on the plate below, and then Lugol’s iodine was added to the surface of the plate. Which of the following is FALSE?

Use the dichotomous key and the data provided below to identify the organism. The results from testing an unknown organism gave the following results: Gram stain: purple circles SIM: Black precipitate formed Hydrogen peroxide: Bubbles produced when added to growth Urea Broth: Broth stayed peach colored Citrate: Blue media

What can you conclude about the culture tested on the top left?