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Ingredients in Mannitol Salt Agar
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Salt, mannitol, phenol red
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Salt, mannitol, lysostaphin, red coloring
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Mannitol, sheep blood, lysostaphin, red enzymes
Frage 2
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Micrococcaceae is not ubiquitous
Frage 3
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[blank_start]Staphylococcus aureus[blank_end] are the most common causes of osteomyelitis and acute bacterial endocarditis
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[blank_start]Staphylococcus saprophyticus[blank_end] is a common cause of urinary tract infection in young females
Frage 5
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Common infections of [blank_start]CNS[blank_end] include, UTI, bacterial endocarditis, infection of prosthetic joints, septicemiain immunosuppressed patients, wound infections and peritonitis.
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CNS
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S. saprophyticus
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S. aureaus
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Micrococcus
Frage 6
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[blank_start]food poisoning[blank_end] is due to ingestion of of pre-formed enterotoxin in food- microorganisms do not have to be present
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food poisoning
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food infection
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CNS
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Micrococcus
Frage 7
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Which Micrococcaceae is catalase negative?
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Micrococcus
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Stomatococcus
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Planococcus
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Staphylococcus
Frage 8
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A staphaurex with a clear background a white speckles is what?
Frage 9
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An organism grows on a mannitol salt agar plate and is pink. What can be said about this organism?
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Salt +, Mannitol -
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Salt +, Mannitol +
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Salt -, Mannitol +
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Salt -. Mannitol -
Frage 10
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how would you interpret a bacitracin test if the organism measures at 16mm
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resistant
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senstitive/susceptible
Frage 11
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Should staphylococcal food poisoning be treated with antibiotics?
Frage 12
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What can be said about an organism that grows on a mannitol salt agar plate and is yellow
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salt -, mannitol +
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salt +, mannitol -
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salt -, manntol -
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salt +, mannitol +
Frage 13
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negative slide coagulase tests need to be backed up with a tube test
Frage 14
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If coagulase tube test clots up and becomes a jelly like substance what is it?
Frage 15
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S. aureas commonly produces beta lactamase and renders penicillin useless
Frage 16
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virulence factors for s. aureus include all of the following EXCEPT:
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Coagulase
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Protein A
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Exotoxin
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Toxic Shock Toxin
Frage 17
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Which test is used to differentiate between Staph's and Strep's?
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catalse
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coagulase
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staphaurex
Frage 18
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What common contaminant is isolated from blood cultures?
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S. aureus
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Coag Neg Staph
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micrococcus sp
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s. saprophyticus
Frage 19
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Superficial skin infection usually involving the face or legs, begins as red macule which progresses to a vesicle which ruptures and forms a yellow, thick crust. May spread and form multiple lesions, more prevalent in the summer months
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Impetigo
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Erysipelas
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Osteomalitis
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Septic Arthritis
Frage 20
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Skin infection which begins abruptly after an incubation period of about a week. Begins with the sensation of tightness and burning at site of invasion, followed quickly by a patch of erythema which rapidly extends outward; may form blisters which may rupture, leaving raw weeping areas
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Impetigo
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Erysipelas
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Septic Arthritis
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Osteomyelitis
Frage 21
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An infection in a bone. Infections can reach a bone by traveling through the bloodstream or spreading from nearby tissue
Frage 22
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S.Aureus Colony Morphology: Large, frequently [blank_start]yellow[blank_end], opaque, [blank_start]creamy[blank_end], smooth, shiny, domed, round. Often but not always [blank_start]beta[blank_end] hemolytic
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yellow
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white
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gray
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offwhite
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creamy
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chalky
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sticky
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dull
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beta
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gamma
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alpha
Frage 23
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Mrsa is slide coagulase neg or pos
Frage 24
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CNS colony morphology- [blank_start]offwhite[blank_end], round, domed, [blank_start]smooth[blank_end], sometimes not as creamy as s.aureus, usually smaller colonies than s. aureus, usually non-hemolytic or beta
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offwhite
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yellow
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green
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denim blue
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smooth
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sticky
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dull
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chalky
Frage 25
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S. Sapticus colony morphology. often pigmented [blank_start]yellow[blank_end], opaque, [blank_start]sticky[blank_end], gummy, [blank_start]non-hemolytic[blank_end]
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yellow
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white
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off-white
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gray
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green
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sticky
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creamy
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chalky
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dull
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non-hemolytic
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beta
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alpha
Frage 26
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Stomatococcus mucilaginosus colony morphology: [blank_start]small[blank_end], domed, adherent, [blank_start]gray-brown[blank_end], tough, [blank_start]stringy[blank_end]
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small
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medium
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large
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pinpoint
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gray-brown
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white
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off-white
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yellow
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stringy
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creamy
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wet
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chalky