The oxidase test is used to differentiate between these 2 m/os who have otherwise similar test results.
What are Shigella & Pseudomonas?
100
This gram + cocci won’t grow on MAC agar.
What is Enterococcus faecalis?
100
MAC agar is selective for which group of m/os?
What are gram negative bacilli?
100
Streptococci colonizing the GI tract can also be called this.
What is Enterococci?
100
What is VRE an acronym for?
What is Vancomycin Resistant Enterococcus?
200
The urease test helps to differentiate between these 2 m/os who have otherwise similar test results.
What are Proteus and Salmonella?
200
Green colonies on HE agar could be either of these two species.
What are Pseudomonas or Shigella?
200
What is the name of this enrichment medium used to grow many different organisms?
What is Blood Agar?
200
What is the chemical composition of the black precipitate seen in so many agars in this lab?
What is FeS?
200
In the hemoccult test, Frank Blood is visible blood, what is hidden blood called?
What is occult blood?
300
What bacteria do you suspect from this patient’s stool result: XLD agar growing yellow colonies and red colonies with black centers?
What are Proteus, Salmonella, E.coli, and Enterobacter?
300
A dark field examination of this m/o will show S shaped spirals that tumble and are motile.
What is Campylobacter jejuni?
300
This selective broth incorporates sodium desoxycholate and sodium citrate to inhibit many m/o, and particularly NF.
What is Gram Negative Broth (GN Broth)?
300
All of the gram negative rod shaped bacteria in this lab are part of what family?
What is Enterobacteriaceae?
300
This list of m/os can all be described as what: E.coli, Enterobacter, Proteus, Pseudomonas, Bacteroides, some Clostridium, and some Enterococci.
What is normal flora of the GIT?
400
M/os that produce capsules around their cells often described as ___ colonies when cultured on agar.
What are mucoid colonies?
400
At 48 hrs, these colonies should appear dark pink with a translucent border and may be surrounded by a zone of precipitated bile.
What are Yersinia colonies?
400
This agar is selective for group D streptococci & enterococci by its inclusion of sodium azide and bile salts.
What is BE agar?
400
Define a “carrier”
What is someone who harbors and spreads infectious bacteria without showing symptoms?
400
This enzyme changes urea medium containing phenol red indicator to pink.
What is urease enzyme?
500
Subculturing from GN broth onto MAC, XLD, and HE agars greatly enhance the likelihood of recovering these m/os.
What are Salmonella & Shigella?
500
This coliform may grow metallic green colonies on EMB agar and have pink-halos around its colonies on MAC agar
What is E.coli?
500
What is this selective and differential agar described in your lecture: uses Eosin Y and methylene blue pH indicators, forms dark purple precipitate at low pH, it isolates fecal coliforms.
What is EMB (Eosin methylene blue)?
500
Define Coliform bacteria.
What are fermentative gram-negative bacilli, sometimes restricted to those fermenting lactose?
500
Normal flora E.coli can be differentiated from pathogenic using this agar.