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39 Cards in this Set
- Front
- Back
enterobacteriaceae gram stain morphology
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gram negative rods
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gram negative, oxidase negative, nonsporing bacilli or coccobacilli that are faculatively anaerobic
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enterobacteriaceae
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other name for enterobacteriaceae
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enterics
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most frequently encountered microbes in clinical specimens
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enterobacteriaceae
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three groups of enterobacteriaceae
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coliforms, noncoliform opportunists, and true pathogens
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part of normal flora that are capable of fermenting lactose
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coliforms
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lack the ability to ferment certain carbohydrates
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noncoliform opportunists
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nonfermenters but not found as part of the normal flora
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true pathogens
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differentiate between _____________ by carbohydrate fermentation tests, the urease test, and the IMViC series
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enterobacteriaceae
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most common nonfermenter
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Pseudomonas aeruginosa
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differentiation of _______ from the enterics can be accomplished using the oxidase test as well as carbohydrate fermentation tests
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nonfermenters
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neisseria gonorrhoeae, neisseria meningitidis, and moraxella catarrhalis
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gram negative cocci
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diplococcus
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gram negative cocci
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gram negative diplococci in urethra or cervix
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gonorrhea
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gram negative diplococci in CSF
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meningitis
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oxidase test, carbohydrate fermentation tests, and the nitrate tests are used for species differentiation
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gram negative cocci
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common normal flora of the skin
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staphylococcus
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gram positive cocci
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staphylococcus
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most common isolate from the skin
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staphylococcus epidermidis
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nonpathogenic member of the staphylococcus genus
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s. epidermidis
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opportunistic pathogen of the staphylococcus genus
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s. epidermidis
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typically isolated from the nasal membranes, skin, intestinal tracts, and genital tracts
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staphylococcus aureus
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potential pathogen of the staphylococcus genus
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s. aureus
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can cause boils, impetigo, pneumonia, meningitis, food poisoning, and TSS
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s. aureus
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isolate by streaking on blood agar plate and studying hemolysis patterns
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staphylococcal strains
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coagulase test, the DNase test, and gelatinase tests are used to identify these strains at the species level
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staphylococcal
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most species are faculatively anaerobic and catalase is not produced
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staphylococcus
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gram positive cocci that appear in chains
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streptococci
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most are nonpathogenic but some are extremely pathogenic
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streptococci
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can cause strep throat, enonatal meningitis, endocarditis and gangrene
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streptococci
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differentiation between members of this genus from hemolysis produced on blood agar and the CAMP test
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streptococci
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share few characteristics
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gram positive rods
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two genera of gram positive rods
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bacillus and clostridium
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produce endospores
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bacillus and clostridium
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obligate anaerobes of the gram positive rods
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clostridia
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aerobes of the gram positive rods
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bacillus
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members of the normal flora of human skin that are gram positive rods
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cornyebacterium
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displya an irregular or club-shaped morphology
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corynebacterium
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colonial morphology and coloration, type of hemolysis, and the catalase and nitrate tests serve to differentiate these organisms
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gram positive bacilli
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