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Micro lab final
Final
39
Microbiology
Undergraduate 1
03/14/2013

Additional Microbiology Flashcards

 


 

Cards

Term
[image]
Definition

 

 

 

Facultative Anaerobe

 

 

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

 

 

 

E. Coli

 

 

Term
[image]
Definition

 

 

 

Microaerophile

 

 

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.

 

 

 

Micrococcus luteus

 

 

 

Term
[image]
Definition

 

 

 

Anaerobe

 

 

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.

 

 

Clostridium

 

 

Term
[image]
Definition

 

 

 

Anaerobic jar

 

 

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.

 

Term
[image]
Definition

EMB

E. Coli has a green metallic sheen on EMB. Due to being a vigorous lactose fermenter

Coliform

Term
[image]
Definition

Hektoen

E. Coli has a pink to orange color (salmon) due to lactose fermentaion

Normal Flora

Term
[image]
Definition

EMB

- Enterobactor has a pink color due to lactose fermentation.

Coliform

Term
[image]
Definition

Hektoen

Enterobactor has a pink to orange color (salmon) due to lactose fermentaion

Normal Flora

Term
[image]
Definition

EMB

- Proteus has NO color due to lactose NON-fermentation.

Opportunistic/Noncoliform

Term
[image]
Definition

Hektoen

Proteus has a BLACK precipitate due to H2S Production

 

Lactose

Non fermenter

Normal Flora

 

 

Term
[image]
Definition

EMB

- Salmonella has NO color due to lactose NON-fermentation.

 

True Pathogen

 

 

Term
[image]
Definition

Hektoen

Salmonella has a BLACK precipitate due to H2S Production


 

Lactose

Non fermenter

Not

Normal Flora

 

 

 

Term
[image]
Definition

EMB

- Shigella has NO color due to lactose NON-fermentation.

 

True Pathogen

 

 

Term
[image]
Definition

Hektoen

Shigella has a Blue-green color with NO Black precipitate due to NO H2S Production

Lactose

Non fermenter

Not

Normal Flora

 

Term
[image]
Definition

NORMAL EMB

 

Term
[image]
Definition

NORMAL HEKTOEN

 

Term
[image]
Definition

Not normal Flora

 

 

Staphylococcus Aureus

 

 

Not

normal Flora

 

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.

 

Term
[image]
Definition

Staphylococcus Aureus

 

Beta

 

Ferments Manitol; bubbles with H2O2

 

Hemolyses

 

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.

 

 

 

Term
[image]
Definition

Staphylococcus Epidermidis

 

Normal flora (skin)

 

Staph Epidermidis

does not ferment manitol, pH > 7.4 pink color.

 

Term
[image]
Definition

Staph Epidermidis

 

Gamma

 

NOT

manitol fermenter; bubbles with H2O2

Staph Epidermidis

does not hemolyse blood Gamma hemolyses

 

 

Term
Catalase test
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%

Term
[image]
Definition

Streptococcus Pyogenes

Not

normal Flora

Streptococcus Pyogenes

causes complete (Beta) hemolyses on blood agar. Streptococcus Pyogenes is sensitive to Bacitracin (A disc).

 

 

 

 

Term
[image]
Definition

Streptococcus Pyogenes

 

BETA

 

NO

bubbles with H2O2

 

Streptococcus Pyogenes

causes complete (Beta) hemolyses on blood agar. Streptococcus Pyogenes is sensitive to Bacitracin (A disc).

 

 

Term
[image]
Definition

Streptococcus pneumoniae

 

Normal flora (nose)

 

 

Streptococcus pneumoniae

causes partial (Alpha) hemolyses on blood agar, greenish color. Streptococcus pneumoniae is sensitive to Optichin (P disc).

 

Term
[image]
Definition

Streptococcus pneumoniae

 

NO

bubbles with H2O2

 

ALPHA

 

 

Streptococcus pneumoniae

causes partial (Alpha) hemolyses on blood agar, greenish color. Streptococcus pneumoniae is sensitive to Optichin (P disc).

 

Term
EMB PLATE
Definition

Plate

 

Bacteria

 

Results

 

EMB

 

E. Coli

 

Green sheen

 

Enterobactor

 

Pink color

 

Proteus

 

No color

 

Salmonella

 

No color

 

Shigella

 

No color

 

Gram positive does not grow here due to bile salts and dyes.

 

 

Term
HEK PLATE
Definition

Hektoen

 

E. Coli

 

Salmon color

 

Enterobactor

 

Salmon color

 

Proteus

 

Black precipitate

 

Salmonella

 

Black precipitate

 

Shigella

 

Blue green,

No Black Precip.

Gram positive does not grow here due to bile salts and dyes.

 

Term
MANITOL
Definition

Manitol

 

Staphylococcus Aureus

 

Yellow color

 

Staphylococcus Epidermidis

 

Pink color

 

Gram negative does not grow here due to 7.5% sodium Chloride

 

 

Term
BLOOD
Definition

Blood

 

Staphylococcus Aureus

 

Beta hemolyses (complete)

 

Staphylococcus Epidermidis

 

Gamma hemolyses (none)

 

Streptococcus Pyogenes

 

Beta hemolyses (complete)

 

Streptococcus pneumoniae

 

Alpha hemolyses (partial)

 

Gram negative will cause alpha Hemolyses.

 

 

Term
Diseases Caused by Staphylococcus a.
Definition
Impetigo, cellulitis, abscess, boils, furuncle, food poisoning, Toxic Shock Syndrome, septicemia
Term
Diseases caused by Streptococcus species
Definition
Sepsis, scarlet fever, Rheumatic Fever, Necrotizing Fasciitis, Toxic Shock Syndrome, septicemia, nephritis
Term
Urine Unknowns
Definition

Urine sample

Streak on 3 plates:

 

Term
BLOOD AGAR-URINE
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

 

Term
EMB-URINE
Definition

 

2.

EMB Growth

E. coli

(green sheen)

Enterobacter

(pink)

No Growth

All others

Term
Sabouraud-URINE
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

Term
Gram Negative Bacilli
Definition

Stool Sample

Gram Negative Rods (bacillus)

Term
EMB- STOOL
Definition

Lactose

Pink

Enterobacter

Metallic green sheen

E.coli

NO PATHOGENS FOUND

Lactose

Colorless

Salmonella

Shigella

Proteus

 

POSSIBLE PATHOGENS

 

 

Term
HEK-STOOL
Definition

Lactose

Yellow-orange

Enterobacter

Salmon

E.coli

NO PATHOGENS FOUND

 

Lactose

Blue-green

Shigella

Black (H

2S) Salmonella

Proteus

 

POSSIBLE PATHOGEN

 

 

Term
[image]
Definition
GRAM POSITIVIE COCCI
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