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Flashcards in Bacteriology Methods Deck (13)
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1

Optochin

Differentiates what organism? How?

aka P-Disk

Strep pneumoniae are SENSITIVE

2

Oxidase positive GNRs (list 6)

Vibrio
Aeromonas
Neisseria
Pseudomonas
Campylobacter
Pasteurella

3

List tests (4) which differentiated β hemolytic Strep

Bacitracin
•GAS SENS
•GBS RES

TMP-SXT
•GAS RES
•GBS RES

PYR
•GAS+

Hippurate
•GBS+

4

List tests (3) to diff Group D Strep

Bile esculin
•GDE+
•S. bovis+

6.5 NaCl
•GDE RES
•S. bovis SENS

PYR
•GDE+
•S. bovis-

5

DNAse

Distinguishes Moraxella catarrhalis from Neisseria

6

Who needs X and V factors?

Haemophilus spp

7

What is X and V factor?

V = NAD

X = hemin

8

Superoxol test

30% H2O2

(Catalase is 3%)

N gonorrhea brisk bubbling

N meningitidis weak delayed bubbles

9

Neisseria CHO use profiles

Glucose ==> gonorrhea
Maltose ==> meningitidis
Sucrose
Lactose ==> lactamica

Red ==> Yellow (acid)

Moraxella is negative for all

10

What does the Staph streak test grow?

Haemophilus spp

11

String test

V cholera vs non-cholera Vibrio

12

Stuart's broth

Christensens broth

Urease test

Rapid splitters = Proteus
Slow splitters = Klebsiella

13

Who are PYR+?

GAS
GDE