Gram Positive Cocci

Question 1

Arrangement of Staphylococcus

Answer 1

clusters

Question 2

best sample for Staphylococcus

Answer 2

aspirates

Question 3

hemolytic pattern of Staphylococcus

Answer 3

beta-hemolytic

Question 4

culture media for Staphylococcus

Answer 4

BAP
MSA
PEA
CNA

Question 5

units of bacitracin

Answer 5

0.04u

Question 6

resistant to bacitracin

Answer 6

Staphylococcus

Question 7

units of furazolidone

Answer 7

100ug

Question 8

resistant to furazolidone

Answer 8

Micrococcus

Question 9

positive to modified oxidase test

Answer 9

Micrococcus

Question 10

resistant to lysostaphin test

Answer 10

Micrococcus

Question 11

positive for furoxone-tween 80 oil red o

Answer 11

Micrococcus

Question 12

positive to glycerol with erythromycin

Answer 12

Staphylococcus

Question 13

positive OF test (Fermentation)

Answer 13

Staphylococcus

Question 14

yellow colonies in MSA

Answer 14

Staphylococcus aureus

Question 15

components of MSA

Answer 15

1% mannitol
7.5% NaCl
phenol red

Question 16

other name of scalded skin syndrome

Answer 16

Ritter’s syndrome

Question 17

cause of toxic shock syndrome

Answer 17

enterotoxin F

Question 18

best single criterion for pathogenicity in Staphylococcus

Answer 18

coagulase test

Question 19

plasma used for coagulase test

Answer 19

rabbit plasma in EDTA

Question 20

heat stable toxin

Answer 20

enterotoxin/neurotoxin

causes vomitting, heat stable, targets T cells

Question 21

enterotoxin causing foodpoisoning

Answer 21

enterotoxin A,B,D

Question 22

enterotoxin causing pseudomembranous enterocolitis

Answer 22

enterotoxin B

Question 23

toxin causing Toxic shock syndrome

Answer 23

enterotoxin F

Question 24

leukocidin

Answer 24

Panton-Valentine

Question 25

action of leukocidin

Answer 25

targets WBCs | causes delta hemolysis

Question 26

antiphagocytic component of cell wall of Staphylococcus

Answer 26

protein A

Question 27

biochemical tests for Staphylococcus aureus

Answer 27

TELLURITE GLYCINE: black VP: pos DNASE: pos (methyl green dye) PYR: neg

Question 28

mode of attachment of S. epidermidis

Answer 28

poly-Y-DL-glutamic acid

Question 29

novobiocin resistant Staphylococcus

Answer 29

Staphylococcus saprophyticus

Question 30

Staphylococcus associated to endocarditis

Answer 30

Staphylococcus ludenensis

Question 31

confers S. lugdinensis resistance to oxaillin

Answer 31

Mec A gene

Question 32

tests that will differentiate coagulase positive staphylococci

Answer 32

PYR | VP

Question 33

gold standard for MRSA detection

Answer 33

PCR | nucleic acid probes

Question 34

Smith and Brown

Answer 34

hemolytic pattern

Question 35

Lancefield

Answer 35

extraction of C carbohydrate

Question 36

Academic/Bergey's

Answer 36

temperature

Question 37

flesh eating bacteria

Answer 37

Streptococcus pyogenes

Question 38

antiphagocytic component of S. pyogenes

Answer 38

M protein

Question 39

Epithelial cell attachment for S. pyogenes

Answer 39

F protein

Question 40

respiratory attachment for S. pyogenes

Answer 40

lipotechoic acid

Question 41

causes rash in scarlet fever

Answer 41

Exotoxin B

Question 42

Streptolysin O Characteristics

Answer 42

labile subsurface WBC, platelet, tissue cells stab in BAP

Question 43

Streptolysin S characteristics

Answer 43

stable surface WBC

Question 44

Bacitracin susceptible Streptococcus

Answer 44

Streptococcus pyogenes

Question 45

common cause of neonatal meningitis

Answer 45

S. agalactiae

Question 46

CAMP test reaction of Streptococcus agalactiae

Answer 46

arrowhead hemolysis

Question 47

5 Groups of viridans streptococci

Answer 47

``` S. mitis S. mutans S. salivarius S. bovis S. anginosus ```

Question 48

most commonly isolated viridans streptococci

Answer 48

S. mutans

Question 49

D antigen positive streptococci

Answer 49

Enterococci

Question 50

Enterococcus faecalis

Answer 50

most common isolate

Question 51

requires cyanocobalamin for growth

Answer 51

Enterococcus faecalis

Question 52

cause of lobar pneumonia

Answer 52

Streptococcus pneumoniae

Question 53

most common cause of bacterial meningitis in adults

Answer 53

Streptococcus pneumoniae

Question 54

colonial morphology of young Streptococcus pneumoniae

Answer 54

dome shape

Question 55

colonial morphology of old Streptococcus pneumoniae

Answer 55

coin with raised rim | donut colonies

Question 56

nutritionally variant streptococci

Answer 56

Abiotrophia Granulicatella *they need B6, cystine, pyridoxal

Question 57

pyridoxal producing bacteria

Answer 57

E. coli Klebsiella Enterobacter Yeasts

Question 58

Streptococci-like microorganisms

Answer 58

``` Aerococcus- vancomycin S Gemella-easily decolorized Lactococcus Leuconostoc-cross reacts with Lancefield D Pediococcus- grow at 45 degrees ```