Lec 3-4 - Staph

Question 1

three important staphs

Answer 1

staph aureus, staph epidermidis, staph saprophyticus

Question 2

staph size

Answer 2

.7-1.2 microns

Question 3

s aureus are usually blank color and blank hemolysis

Answer 3

off white or yellow, beta

Question 4

s epidermidis are usually blank color colonies

Answer 4

opaque white

Question 5

staph is not blank so it can grow on bunch of agars

Answer 5

fastidious

Question 6

do staph form spores

Answer 6

no

Question 7

do staph move

Answer 7

no

Question 8

nutrients created by staph

Answer 8

facultative anaerobe

Question 9

staph is catalase blank

Answer 9

positive usually

Question 10

coagulase positive means blank

Answer 10

pathogenic staph

Question 11

s aureus and intermedius is coagulase blank

Answer 11

positive

Question 12

s epidermidis is coagulase blank

Answer 12

negative

Question 13

peptidoglycan makes up this much of cell wall weight, teichoic acid makes up this much, protein a makes up this much

Answer 13

50, 40, 5

Question 14

s aureus is resistant to blank but susceptible to blank

Answer 14

lysozyme, lysostaphin

Question 15

teichoic acid binds to blank in the host

Answer 15

fibronectin

Question 16

protein a binds to blank of antibodies

Answer 16

Fc

Question 17

s saprophyticus are usually in blank

Answer 17

genitourinary

Question 18

staph is associated with these parts of the mouth but not the gingival crevice

Answer 18

saliva, teeth

Question 19

staph and strep are usually the cause of blank lesions

Answer 19

root caries

Question 20

main carriers of s aureus

Answer 20

noses of hospital personnel, vagina during periods

Question 21

s epidermidis causes blank

Answer 21

uti hospital acquired (opportunistic), endocarditis, biofilms

Question 22

s saprophyticus causes blank

Answer 22

uti community acquired

Question 23

staph usually causes these infections

Answer 23

cutaneous, serious diseases, pneumonia, septicemia, food poisoning, toxic shock

Question 24

staph toxins are dangerous and can cause food poisoning and are superantigens and heat stable up to 100 degrees C for several minutes and can be used as a blank

Answer 24

bio warfare agent

Question 25

s epidermidis is blank resistant to methicillin

Answer 25

80 percent

Question 26

biofilm formation by s epidermidis is induced by blank and encoded by blank

Answer 26

stress, ica operon

Question 27

biofilm is often formed on blank

Answer 27

prosthetic devices

Question 28

penicilllin and methicillin are blank antibioitcs interfere with cell wall formation by messing with PBP

Answer 28

beta lactam

Question 29

vancomycin antibiotics are blank antibiotics and interfere with cell wall formation by binding to D Ala D Ala residues

Answer 29

glycopeptide

Question 30

vancomycin is used to treat blank infections

Answer 30

mrsa

Question 31

cyclic lipopeptide that binds to bacterial cell membrane causes rapid depolarization

Answer 31

daptomycin

Question 32

beta lactamase resistance is due to an enzyme that destroys the beta lactam ring via the encoding of this gene

Answer 32

blaZ

Question 33

intrinsic methiciillin resistance is from the staphylococcal cassette chromosome blank

Answer 33

mec (SCCmec)

Question 34

main way to tell apart HA MRSA and CA MRSA

Answer 34

HA MRSA doesnt have PVL (leukotoxin) but CA does

Question 35

HA infections are usually more blank

Answer 35

invasive

Question 36

CA infections are usually more blank

Answer 36

necrotizing

Question 37

CA infections are genetically different than HA and are susceptible to blank antibioitics

Answer 37

non beta lactam... such as tetracycline, sulfa drugs, vancomycin

Question 38

this is for s aureus screening

Answer 38

CHROMagar of nasal/rectal samples