Shared Flashcard Set

Details

Wk 2
VT 260: Mid
50
Veterinary Medicine
Not Applicable
04/16/2015

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Cards

Term
How quickly do we need to get the agar in the incubator after antibiotic disks have been added?
Definition
ASAP, but 15min at the longest
Term
When doing a catalase test what do you add to your specimen
Definition
3% Hydrogen Peroxide.
Term
positive catalase test will show?
Definition
Bubbles: staph +
No Bubbles: strep -
Term
If you perform a KOH (Potassium Hydroxide) test, what is the additive?
Definition
Potassium Hydroxide
Term
The reagent that is used for the oxidase test is?
Definition
1% Tetramethyl-p-phenylenediamine
Term
The MIC zone on your susceptibility testing, the larger it is the lower the concentration of drug needed. True or False?
Definition
True
Term
The reagent needed for a coagulase test is?
Definition
EDTA
Term
The temperature for an incubator for normal culturing?
Definition
37 degrees C. 98.6 degrees F
Term
When scoring a CMT, what does the symbol t refer to?
Definition
Trace amount
Term
For CMT, at what point do you score an initial CMT?
Definition
10-15secs
Term
What is the objective of specimen collection?
Definition
To get a sample that represents the type of bacteria
Term
We have a draining tract, what are the frequently contaminated with
Definition
Norm Flora
Term
Your gram negative bacteria will stain what color?
Definition
Pink
Term
Gram positive bacteria stain what color?
Definition
Purple
Term
You have a McConkey agar, it is a selective media. It grows bacteria in the present of bile salts and crystal violet. What bacteria is it good for?
Definition
Enterobacteria. (Lactose fermenting enterbacteriaceae)
Term
What culture media is the best and most commonly used?
Definition
Solid Media/Plate
Term
Why do we invert the agar plates when we put them in the incubator?
Definition
To keep the condensation off the agar
Term
What is the primary isolation media?
Definition
Blood Agar (grow just about anything)
Term
Your enrichment broth is used to grow what?
Definition
Anaerobic Bacteria
Term
You pull out a blood agar and have delta hemolysis, this is commonly produced by what bacteria?
Definition
Staphylococcus
Term
Your triple sugar iron agar is used for detection of?
Definition
glucose fermentation and the production of hydrogen sulfide.
Term
How do you create an oxygen free environment?
Definition
Putting a candle in a jar and closing it tight. This is will produce carbon dioxide.
Term
You have a McConkey agar, you see a healthy profuse growth, and it is presumptive evidence of what organism?
Definition
Gram Negative
Term
Your urea tubes turn what color when they are positive?
Definition
Pink
Term
Before you use a blood culture, you use the thioglycollate broth to grow what?
Definition
Anaerobic Bacteria
Term
How many ml’s do you need for a blood culture?
Definition
10-15mls
Term
While making the preliminary evaluation of primary cultures, what must you keep in mind?
Definition
Where did it come from
Term
Nosocomial infections come from?
Definition
Hospital Setting
Term
Motility testing, how do you know if it’s positive?
Definition
Color o/s stab line. Everything is mixed
Term
What is it called when you are identifying microbes?
Definition
Isolating
Term
What type of organisms do we not isolate?
Definition
Zoonotic Disease
Term
All viruses are free living. True or false and why?
Definition
False because they need a host cell to survive.
Term
If an organism is diplicoccus, what does this mean?
Definition
cocci are in pairs.
Term
How do bacteria reproduce or replicate?
Definition
Binary fission.
Term
On a blood agar, you see green growth, what type of hemolysis is this?
Definition
Alpha Hemolysis
Term
Complete hemolysis is also called?
Definition
Beta Hemolysis
Term
No hemolysis is termed what?
Definition
Gamma
Term
If you use crystal violet, iodine and saphrine, what is the name of the staining?
Definition
Gramm staining.
Term
Bacteria prefer what type of pH range?
Definition
-6.5-7.5
Term
You must know what a quality incubator must have:
Definition
heat source, insulation, thermometer, racks,
Term
Brucillis canis needs what type of culture?
Definition
-Blood culture
Term
gram negative bacilli, aerobic and is oxidase positive, what might it be?
Definition
Pseudomonas
Term
You have a gram positive cocci, that is catalase positive and coagulase positive, what is it?
Definition
Staphylococcus aureus.
Term
You have gram positive bacilli, has spores but non hemolytic, what is it?
Definition
Bacillus anthracis
Term
What does NCCLS stand for?
Definition
National committee for clinical laboratory standards.
Term
What are the three categories of spores?
Definition
Central, Subterminal, terminal.
Term
What is the gram stain in order.
Definition
Purple, Rinse, Yellow, Rinse, Clear (10-15sec), rinse, Red
Term
What is the goal for streaking plates?
Definition
To grow individual colonies of specimen
Term
What type of bacteria grows best at low temperatures?
Definition
psychrophiles.
Term
What are bacteria that like to grow at high temperatures?
Definition
Thermophiles.
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