Flashcards
Staphylococci
Cards in this deck (28)
- 1Which strain of Staphylococcus causes otitis in carnivores?S. Intermedius
- 2Which Staphylococcus causes Greasy pig disease?S..Hyicus
- 3what are cultivation methods for staphylococci?Mesophilic: 37°C, 24h, aerobic
- 4Which Staphylococcus has enterotoxins?S. Aureus
- 5What is common for Staphylococcus on medium?medium sized -1μm,
varying colour- yellow/white/grey,
raised, shiny - 6What is the medium used?Enriched media
meat pepton blood agar - 7Which strains cause double haemolysis?S. Aureus
S. Pseudointermedius - 8Name 3 coagulase + staphylococciS. intermedius
S. Aureus
S. Hyicus - 9Name 3 coagulase -S. saprophyticus
S. epidermidis
S. Haemolyticus - 10Describe microscopic features of staphylococciCocci in clusters, formed like grapes
Gram +
no flagella
enveloped, encapsulated - 11What does coagulase do?exotoxin
fibrinogen-->fibrin
coagulates blood plasma (rabbit)
=pathogenic! - 12What are β- lactams? Which strain is more resistant?Antibiotics that inhibit bacterial
cell wall biosynthesis.
S. Aureus! - 13Some characteristics of Staphylococci are:non-motile
facultative anaerobic
cat +
ox -
gram + - 14Which strain causes Nosocomial infections?S. Aureus
- 15Name 5 enzymes found in staphylococci:-coagulase
-hyaluronidase
-staphylokinase
-nuclease
-lipase - 16What is the agent causing nosocomial infections?MRSA- meticillin resistant staph aureus
has multiresistance to β-lactams
after 72h of transmittion in tissue it becomes resistant to any treatment - 17Where can we find TSST? what does it mean?toxic shock syndrome toxin
in S. aureus - 18Name 5 toxins in staphylococci*a-toxin
*b-toxins
*enterotoxins
*TSST
*Haemolysins - 19What is the function of staphylokinase?activates plasminogen to plasmin to digest fibrin clots
- 20In which species is MRSA common?dog
horse
pig - 21Which strain is usually non-pathogenic and acts when you are immunosuppressed? it is a human saprophyte!S. Epidermidis
- 22-endometritis -pyoderma -cystitis Caused by.........?S. Pseudointermedius in dogs
- 23Which is the only non-haemolytic strain?S. hyicus
- 24-mastitis -dermatitis -subclinical/acute/chronic Caused by____in___1. S. aureus
2. Bovine - 25Characteristic effect of S. aureus in ovis and capra:folliculitis- hair follicle infection
- 26pyogenic infections, opportunistic and endospore production are common for staphylococciFALSE
does not produce endospores - 27Botryomycosis caused by S. aureus is common in what species?pigs, horses
- 28What is the effect after cultivation on MacConkey agar?nothing
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- Microbiology Flashcards on Staphylococci, created by Sotia P. on 13/04/2019.
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- Sotia P.
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