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Flashcards in Micro - Bacteria Deck (167)
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1

catalase test

GP

staph (+)
strep (-)

2

coagulase test

GP

staph aureus (+)
staph epidermidis or saprophyticus (-)

3

novobicin test

GP

staph epidermidis (sens)
staph saprophyticus (resis)

4

hemolysis

GP

streptococci (a, ß, g)

5

alpha hemolysis

GP

Strep. pneumoniae (capsule)
Strep. viridans (no capsule)

- differentiate btwn the two using optochin + bile solubility

6

ß hemolysis

GP

Strep pyogenes (grpA)
Strep agalactiae
Staph aureus
Listeria monocytogenes

LAAP = listeria, aureus, agalactiae, pyogenes

7

gamma hemolysis

GP

enterococcus
non-enterococcus

8

optochin sensitivity

GP

Strep. pneumoniae - sensitive
Strep. viridans - resistant

9

bile solubility

GP

Strep. pneumoniae - soluble (lysed by bile)
Strep. viridans - not lysed by bile

10

bacitracin

GP

S. pyogenes (sensitive)
S. agalactiae (resistant)

11

growth in bile and 6.5% NaCl

GP

Enterococcus faecalis

12

growth in bile, not 6.5% NaCl

GP

Strep. bovis

13

B cells typically infected by this virus

EBV

14

Ganglion cells typically infected by this virus

herpes

15

oligodendrocytes typically infected by this virus

JC virus --> PML
Measles --> SSPE

16

follicular dendritic cells typically infected by this virus

HIV

17

grows at 42˚C

GN, oxidase +, comma shaped

campylobacter jejuni

18

grows in alkaline media

GN, oxidase +, comma shaped

vibrio cholera

19

produces urease

GN, oxidase +, comma shaped

helicobacter pylori

20

GN diplococci
2

neisseria meningitidis
neisseria gonorrhoeae

differentiate using maltose test

21

maltose test is used for..

neisseria MeninGitidis (fermenter - maltose + glucose)
neisseria Gonorrhoeae (non-fermenter - glucose only)

22

GN "coccoid" rods
4

haemophilus influenza (requires factor V, X)
Bordtella pertussis
Pasturella - animal bites
Brucella

23

Requires factor V, X

haemophilus influenza - GN coccoid rods
(can also be grown with staph aureus, which provides factor V)

24

lactose fermenters (rate) - Macconkey's

GN

klebsiella, e. coli, enterobacter (fast fermenter)

citrobacter, serratia (slow fermenter)

MaconKEES

25

lactose non-fermenters

how do differentiate between them?

All GN

Shigella
Salmonella
Proteus
Yersinia
Pseudomonas

Oxidase test - only pseudomonas are oxidase +

26

oxidase test - which bugs are +? -?

Oxidase (-)
Shigella
Salmonella
Proteus
Yersinia

Oxidase (+)
Pseudomonas
Campylobacter
Vibrio cholerae
Helicobacter pylori

27

oxidase +, comma shaped

campylobacter jejuni - grows at 42˚
vibrio cholera - alkaline media
helicobacter pylori - urease

28

bacterial infection associated with schistocytes

EHEC - eating undercooked meats
Shigella

29

Staph aureus virulence factor

Protein A - binds Fc-IgG - inhibits complement activation and phagocytosis; colonizes the nose

30

TSST

superantigen that binds to MHCII and TCR, resulting in polyclonal T cell activation

present in vaginal or nasal tampons