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Laboratoires Flashcards

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Biology 101 flashcards
1
Q

Nutrient agar

A

permissive medium

aerobic plate count

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2
Q

AIA

A

Actinomycetes selective

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3
Q

Sabouraud

A

fungus (selective)

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4
Q

Azo

A

Azotobacter (selective, no nitrogen source)

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5
Q

KEA

A

Enterococci, esculin degraders turns the medium black

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6
Q

Endo

A

Coliforms, lactose fermenters turn red

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7
Q

EMB

A

Coliforms, lactose fermenters: blue-black

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8
Q

mFC

A

Coliforms, lactose fermenters: blue

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9
Q

Endo, EMB, mFc

A

Coliforms, lactose fermenters

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10
Q

RCAF

A

Propionibacterium pink or buff colored colonies

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11
Q

4S

A

Staphylococcus black colonies plus white precipitate: areus

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12
Q

Snyder agar

A

production of lactic acid : yellow

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13
Q

3 main groups of microorganisms in soil

A

1 bacteria
2 actinomycete
3 funfi

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14
Q

Nessler s reagent test for…

color…

A

presence of ammonia
turns yellow-brown
the darker the color, the more ammonia

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15
Q

Azotobacter vinelandii : aerobe or anaerobe

A

aerobe

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16
Q

Clostridium spp. : aerobe or anaerobe

A

anaerobe

17
Q

Describe Clostridia (3)

A

1- medium-sized
2- Gram positive
3- rods with central to sub-terminal endospores

18
Q

Susceptibility to dental caries

what test

A

Snyder

19
Q

propionibacteria : aerobe, anaerobe, fac aerobe… ?

A

aerotolerant anaerobe

20
Q

propionibacteria inhabit what part of your skin

A

hair canals

21
Q

micrococci aerobe or anaerobe

A

aerobe

22
Q

RCAF

how does P. acnes looks like

A

buff-coloured colonies

23
Q

RCAF

how does P.avidum looks like

A

pink and mucoid

24
Q

RCAF

how does P. granulosum looks like

A

pink and dry

25
Q

what organisms can be dangerous if you are a carrier and you work in a hospital

A

S. aureus

26
Q

4 s agar to determine …

A

if you are a staph carrier

27
Q

positive S. aureus

what color

A

Blue granules

28
Q

For which test you had to chew parafilm

A

Snyder

29
Q

major milk borne disease (3)

A

1- tuberculosis
2- brucellosis
3- typhoid

30
Q

What is flash pasteurization

A

heat to 71 C

15 seconds

31
Q

nitrite prevents growth of

A

C. botulinum

32
Q

TGEA

A

aerobic count plates

33
Q

EMB definition

A

Levine Eosin Methylene Blue agar

34
Q

KEA definition

A

Kanamycin Esculin Azide agar

35
Q

4S definition

A

Single step Selection for Staphylococci

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