Term
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Definition
Does not require oxygen. Can grow with or without it. Able to detoxify toxic by products of oxygen.
Growth throughout the test tube. Due to ability to grow with or without oxygen
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Term
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Definition
Does not grow in atmospheric oxygen, but requires a small amount for growth. Able to detoxify toxic by products of oxygen.
Growth in the middle of tube. Due to not being able to grow in high oxygen, or no oxygen.
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Term
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Definition
Lacks the enzyme for using oxygen. Can’t live in oxygen. NOT able to detoxify toxic by products of oxygen.
Growth at bottom of tube. Due to not being able to grow in oxygen.
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Term
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Definition
A chemical pack and water is used, producing hydrogen and carbon dioxide. The hydrogen reacts with the free oxygen in the jar producing water, and an anaerobic condition. A methylene blue indicator is used to show the oxygen content. Blue = oxygen, white = NO oxygen. Mention in lab textbook. The indicator used in the lab turns red in the present of oxygen and white in the absence.
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Term
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Definition
EMB
– E. Coli has a green metallic sheen on EMB. Due to being a vigorous lactose fermenter
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Coliform |
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Term
|
Definition
Hektoen
– E. Coli has a pink to orange color (salmon) due to lactose fermentaion
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Normal Flora |
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Term
|
Definition
EMB
- Enterobactor has a pink color due to lactose fermentation.
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Coliform |
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Term
|
Definition
Hektoen
– Enterobactor has a pink to orange color (salmon) due to lactose fermentaion
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Normal Flora |
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Term
|
Definition
EMB
- Proteus has NO color due to lactose NON-fermentation.
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Opportunistic/Noncoliform |
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Term
|
Definition
Hektoen
– Proteus has a BLACK precipitate due to H2S Production
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Lactose
Non fermenter
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Normal Flora
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Term
|
Definition
EMB
- Salmonella has NO color due to lactose NON-fermentation.
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Term
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Definition
Hektoen
– Salmonella has a BLACK precipitate due to H2S Production
Lactose
Non fermenter
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Not
Normal Flora
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Term
|
Definition
EMB
- Shigella has NO color due to lactose NON-fermentation.
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Term
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Definition
Hektoen
– Shigella has a Blue-green color with NO Black precipitate due to NO H2S Production
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Lactose
Non fermenter
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Not
Normal Flora
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Term
|
Definition
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Term
|
Definition
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Term
|
Definition
Not normal Flora
Staphylococcus Aureus
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Staph Aureus
Causes a yellow color due to pH < 6.8 due to fermetination of manitol. Staph Aureus causes complete (Beta) hemolyses on blood agar. Manitol plate distinguishes between Staph A., and Staph E. Confirmation of Staph Aureus using an agglutination test.
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Term
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Definition
Staphylococcus Aureus
Beta
Ferments Manitol; bubbles with H2O2
Staph Aureus
Causes a yellow color due to pH < 6.8 due to fermetination of manitol. Staph Aureus causes complete (Beta) hemolyses on blood agar. Manitol plate distinguishes between Staph A., and Staph E. Confirmation of Staph Aureus using an agglutination test.
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Term
|
Definition
Staphylococcus Epidermidis
Staph Epidermidis
does not ferment manitol, pH > 7.4 pink color.
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Term
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Definition
Staph Epidermidis
Gamma
NOT
manitol fermenter; bubbles with H2O2
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Staph Epidermidis
does not hemolyse blood Gamma hemolyses
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Term
|
Definition
will distinguish between
Staph and Strep. Staph will cause bubbling with hydrogen peroxide. Strep will NOT bubble with hydrogen peroxide. GRAM Negative will NOT grow on manitol due to sodium chloride of 7.5%
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Term
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Definition
Streptococcus Pyogenes
Streptococcus Pyogenes
causes complete (Beta) hemolyses on blood agar. Streptococcus Pyogenes is sensitive to Bacitracin (A disc).
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Term
|
Definition
Streptococcus Pyogenes
Streptococcus Pyogenes
causes complete (Beta) hemolyses on blood agar. Streptococcus Pyogenes is sensitive to Bacitracin (A disc).
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Term
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Definition
Streptococcus pneumoniae
causes partial (Alpha) hemolyses on blood agar, greenish color. Streptococcus pneumoniae is sensitive to Optichin (P disc).
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Term
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Definition
Streptococcus pneumoniae
causes partial (Alpha) hemolyses on blood agar, greenish color. Streptococcus pneumoniae is sensitive to Optichin (P disc).
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Term
|
Definition
Plate
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Bacteria
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Results
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EMB
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E. Coli
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Green sheen
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Enterobactor
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Pink color
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Proteus
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No color
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Salmonella
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No color
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Shigella
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No color
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Gram positive does not grow here due to bile salts and dyes.
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Term
|
Definition
Hektoen
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E. Coli
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Salmon color
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Enterobactor
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Salmon color
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Proteus
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Black precipitate
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Salmonella
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Black precipitate
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Shigella
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Blue green,
No Black Precip.
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Gram positive does not grow here due to bile salts and dyes.
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Term
|
Definition
Manitol
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Staphylococcus Aureus
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Yellow color
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Staphylococcus Epidermidis
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Pink color
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Gram negative does not grow here due to 7.5% sodium Chloride
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Term
|
Definition
Blood
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Staphylococcus Aureus
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Beta hemolyses (complete)
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Staphylococcus Epidermidis
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Gamma hemolyses (none)
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Streptococcus Pyogenes
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Beta hemolyses (complete)
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Streptococcus pneumoniae
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Alpha hemolyses (partial)
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Gram negative will cause alpha Hemolyses.
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Term
Diseases Caused by Staphylococcus a. |
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Definition
Impetigo, cellulitis, abscess, boils, furuncle, food poisoning, Toxic Shock Syndrome, septicemia |
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Term
Diseases caused by Streptococcus species |
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Definition
Sepsis, scarlet fever, Rheumatic Fever, Necrotizing Fasciitis, Toxic Shock Syndrome, septicemia, nephritis |
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Term
|
Definition
Urine sample
Streak on 3 plates:
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Term
|
Definition
1.
Blood agar Alpha hemolysis
E. coli
Enterobacter
Beta hemolysis
Staph. aureus
Gamma hemolysis
Staph. Epidermidis(sometimes alpha)
Candida
ANY GROWTH IS A URINARY PATHOGEN
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Term
|
Definition
2.
EMB ⊕ Growth
E. coli
(green sheen)
Enterobacter
(pink)
No Growth
All others |
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Term
|
Definition
3.
Sabouraud Good growth
White, creamy
Candida
Pinpoint colonies (for 1 day old plate)
E. coli
Enterobacter
Staph. aureus
Pinpoint colonies (for 1 day old plate)
Staph. e.
No growth
Strep. pyogenes |
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Term
|
Definition
Stool Sample
Gram Negative Rods (bacillus) |
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Term
|
Definition
Lactose
⊕
Pink
Enterobacter
Metallic green sheen
E.coli
NO PATHOGENS FOUND
Lactose
⊝
Colorless
Salmonella
Shigella
Proteus
POSSIBLE PATHOGENS
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Term
|
Definition
Lactose
⊕
Yellow-orange
Enterobacter
Salmon
E.coli
NO PATHOGENS FOUND
Lactose
⊝
Blue-green
Shigella
Black (H
2S) Salmonella
Proteus
POSSIBLE PATHOGEN
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Term
|
Definition
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