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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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streptococci
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chains - cocci
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ex. Streptococcus pyogenes
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staphylococci
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grapelike clusters cocci
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ex. Staphylococcus aureus
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Micrococci
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groups of four tetrads cocci
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Diplococci
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two pair-cocci
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ex. Streptococcus pneumonie
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Catalase test quality control
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Staphlococcus aureus- catalase (+)
Streptococci pyogenes- catalase (=) |
Positive- observe bubbling
Negative- no bubbling |
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Coagulase test quality control
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Staphylococcus aureus - (+)
Staphylococcus epidermids- (=) |
Positive reaction- pink clumping
Negative- no clumping roate for 5 seconds |
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Staph aureus
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1. Gram Positive Cocci-
2. Beta-hemolytic 3. Catalase (+) 4. Coagulase (+) |
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Staph Epidermidis
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1.GPC
2. Non-hemolytic 3. catalase (+) 4. Coagulase (=) |
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Staph. saprophyticus
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1. GPC
2. Non-hemolytic 3. Catalase (+) 4. Coagulase (=) |
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alpha (A)
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partial lysis of red blood cells around colony greenish discoloration
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Beta (B)
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Complete lysis of red blood cell around colony clear area around colony
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Streptococci agalctiae, Streptococci pyogenes.
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NonHemolytic
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No lysis of red blood cells around colony no change in agar.
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gram-negative diplococci
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N. meningitidis
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gram-positive diplococci (lancet shaped)
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S. pneumoniae
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gram-negative pleomorphic
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H. influenzae
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Oxidase test QC
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Positive- Escherichia coli
Negative- Pseudomonas Aeruginosa |
Positive reaction- Purple or dark color within 20 sec
Negative- no color change |
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Indole test QC
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Positive- Escherichia coli
Negative- Kiebsiella pneumonie |
Positive reaction: Blue to blue/green
negative: No color or pink within 2 minutes |
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P disk- test opotchin suscpetibility
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greater > 15mm S.pneumoniae
less 15mm Virdians streptococcus group |
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Bacitracin susceptibility "A disk"
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Susceptibility- growth
Resistant- no growhth |
"S" Group A streptococcus pyogenes
"R" Group B streptococcus Agalactiae |
