BACTE LEC - Strep

Question 1

morphology of strep

Answer 1

cocci in chains or pairs

Question 2

metabolism of strep

Answer 2

lactic acid fermentation

Question 3

normal habitat of strep

Answer 3

throat, upper RT

Question 4

catalase rxn

Answer 4

-

Question 5

growth of strep more pronounced on which agar

Answer 5

enriched agar [blood agar]

Question 6

appearance of colonies

Answer 6

pinpoint, transparent colonies

Question 7

strep requires increased ___for growth

Answer 7

CO2

Question 8

pigment of serrati

Answer 8

prodigiosin [red]

Question 9

pigment of aeruginosa

Answer 9

thiocyanin [blue green]

Question 10

classif based on physiologic characteristics

pus producing

Answer 10

pyogenic

Question 11

type of hemolysis of pyogenic strep

Answer 11

beta

Question 12

type of hemolysis of viridans

Answer 12

alpha or non

Question 13

type of hemolysis of lactic acid –

Answer 13

non-hemolytic/gamma

Question 14

classif based on physiologic characteristics

elevation of wbc

Answer 14

pyogenic

Question 15

classif based on physiologic characteristics

opportunistic patho

Answer 15

viridans

Question 16

not part of lancefield group

Answer 16

viridans

Question 17

classif based on physiologic characteristics

non hemolytic, dairy products, Lancefield group N

Answer 17

Lactic acid

Question 18

classif based on physiologic characteristics
flora of intestine
resistant to vancomycin

Answer 18

enterococci

Question 19

strep Grp A susceptible to

Answer 19

Bacitracin

Question 20

group a and group b RESISTANT TO

Answer 20

Sulfomethoxazole and Trimethoprim (SXT)

Question 21

for accuracy of group a identification

Answer 21

Sulfomethoxazole and Trimethoprim (SXT)

Question 22

resistant to bacitracin and sxt

Answer 22

s agalactiae

Question 23

group a strep classified accdg to

Answer 23

cell wall structure

Question 24

pathogenic determinants of group a strep

Answer 24

M protein
Antiphagocytic substance/enzyme
adherence to mucosal cells

Question 25

two hemolysin

Answer 25

SLO and SLS

Question 26

prevents phagocytosis, adheres to cell wall

Answer 26

M protein

Question 27

type of hemolysin | oxygen labile

Answer 27

slo

Question 28

type of hemolysin active on reduced form [anaerobic] -highly antigenic

Answer 28

slo

Question 29

type of hemolysin | -oxygen stable

Answer 29

SLS

Question 30

type of hemolysin - hemolysis around colony [aerobic] - non-antigenic

Answer 30

SLS

Question 31

type of hemolysin | -lyses leukocytes

Answer 31

SLS

Question 32

causes scarlet fever/rash

Answer 32

erythrogenic toxin

Question 33

spreading factor

Answer 33

hyaluronidase

Question 34

redness of skin

Answer 34

erythema

Question 35

fibrinolytic | utilized as treatment for blood clot

Answer 35

streptokinase

Question 36

clinical infections also called strep throat abrupt onset

Answer 36

bacterial pharyngitis and tonsilitis

Question 37

clinical infections | ast very predictable

Answer 37

bacterial pharyngitis and tonsilitis

Question 38

clinical infections | s/s: sore throat, malaise, fever, headache, nausea, vomiting, abdominal pain

Answer 38

bacterial pharyngitis and tonsilitis

Question 39

clinical infections | s/s: tonsils and pharynx inflamed

Answer 39

bacterial pharyngitis and tonsilitis

Question 40

clinical infections | s/s: cervival lymph nodes: swollen and tender

Answer 40

bacterial pharyngitis and tonsilitis

Question 41

clinical infections | s/s: weeping lesions

Answer 41

pyodermal infection/impetigo

Question 42

onset of pyodermal infection

Answer 42

2-5 years

Question 43

onset of bacterial pharyngitis and tonsilitis

Answer 43

abrupt

Question 44

easily treated infection

Answer 44

pyodermal infection/impetigo

Question 45

MOT for bacterial pharyngitis and tonsilitis

Answer 45

droplets and close contact

Question 46

caused by erythrogenic toxin

Answer 46

scarlet fever

Question 47

s/s: desquamation, strawberry tongue, tongue yellow white w/ red

Answer 47

scarlet fever

Question 48

susceptibility test for scarlet fever

Answer 48

dick's test

Question 49

test: erythrogenic toxin is injected

Answer 49

dick's

Question 50

+ test for dick's t

Answer 50

redness and swelling

Question 51

implication of + test in dick's test

Answer 51

susceptible to scarlet fever, no Ab yet

Question 52

diagnostic test for scarlet fever

Answer 52

schultz-charlton reaction

Question 53

test:antierythrogenic toxin is injected

Answer 53

schultz-charlton reaction

Question 54

result of schultz-charlton reaction

Answer 54

rash will blanch then fade