Lab: Bacteria Flashcards

(52 cards)

0
Q

Gram stain of E. coli

A

Gram (-)

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1
Q

What is the morphology of E. coli?

A

Bacilli

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2
Q

Colony appearance of E. coli

A

Beige colonies

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3
Q

Details of E. coli

A
  • most commonly worked with bacteria
  • most strains harmless, typically hear about O157:H7 that causes food poisoning
  • ubiquitous
  • part of Enterobacteriaceae family
  • molecular “workhorse”
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4
Q

What’s the morphology of S. aureus?

A

Cocci

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5
Q

Gram stain of S. aureus

A

Gram +

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6
Q

Colony appearance of S. aureus

A

Golden yellow

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7
Q

Details of S. aureus

A
  • golden grape bunches
  • normal part of skin flora but typically hear about MRSA
  • staph typically blamed for Strep infections
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8
Q

Morphology of S. mutans

A

Cocci

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9
Q

Gram stain of S. mutans

A

Gram +

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10
Q

Colony appearance of S. mutans

A

Opaque colonies

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11
Q

Details of S. mutans

A
  • normal part of oral flora
  • responsible for carb metabolism thus creating an acidic environment that contributes to dental caries
  • forms dental biofilms
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12
Q

Morphology of P. hauseri

A

Bacilli

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13
Q

Gram stain of P. hauseri

A

Gram -

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14
Q

Colony appearance of P. hauseri

A

Opaque colonies

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15
Q

Details of P. hauseri

A
  • highly motile
  • found in intestines of humans and animals, soil and water
  • known to cause UTIs
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16
Q

Morphology of B. cereus

A

Bacilli

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17
Q

Gram stain of B. cereus

A

Gram +

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18
Q

Colony appearance of B. cereus

A

Fluffy white colonies

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19
Q

Details of B. cereus

A
  • often used as probiotic for animals
  • harmless except for strains that cause fried rice syndrome
  • can produce endospores
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20
Q

Morphology of B. megaterium

21
Q

Gram stain of B. megaterium

22
Q

Colony appearance of B. megaterium

A

White with ruffled edges

23
Q

Details of B. megaterium

A
  • one of largest bacteria in terms of size
  • naturally produces penicillin amidase
  • can produce spores
24
Morphology of B. subtilis
Bacilli
25
Gram stain of B. subtilis
Gram +
26
Colony appearance of B. subtilis
Dull, tan, raised, wrinkled edges
27
Details of B. subtilis
- found in soil and vegetation - model organism for the study of endospore formation - can be used as fungicide - naturally produces new phospholipid antibiotic - degrades TNT
28
Morphology of K. rosea
Cocci
29
Gram stain of K. rosea
Gram +
30
Colony appearance of K. rosea
Pink colonies
31
Details of K. rosea
- aka Micrococcus roseus - found in freshwater, saltwater and soil - chromogenesis at 25 to form pink colonies - fastidious
32
Morphology of M. luteus
Cocci
33
Gram stain of M. luteus
Gram +
34
Colony appearance of M. luteus
Yellow colonies
35
Details of M. luteus
- aka Kocuria rhizophila - typical soil bacterium - threat to immunocompromised individuals - chromogenesis at 25 to form yellow colonies
36
Morphology of S. marcescens
Bacilli
37
Gram stain of S. marcescens
Gram -
38
Colony appearance of S. marcescens
Red colonies
39
Details of S. marcescens
- produces prodigiosin at 25 giving red appearance - very ubiquitous - can be pathogen (UTI and catheter) - US and UK tested effects by spraying - church wafers
40
Morphology of P. aeruginosa
Bacilli
41
Gram stain of P. aeruginosa
Gram -
42
Colony appearance of P. aeruginosa
Opaque green/blue colonies
43
Details of P. aeruginosa
- ubiquitous human and plant pathogen - produces pyocyanin (blue-green) at 37 - loves to be in biofilms - CF and burn patients
44
Morphology of E. faecalis
Cocci
45
Gram stain of E. faecalis
Gram +
46
Colony appearance of of E. faecalis
Opaque colonies
47
Details of E. faecalis
- typical GI bacterium - found in cosmetics and hygienic chemicals - ability to spoil sap and syrup - part of Enterobacteriaceae family
48
Morphology of P. phosphoreum
Bacilli
49
Gram stain of P. phosphoreum
Gram -
50
Colony appearance of P. phosphoreum
Blue-green glowing colonies
51
Details of P. phosphoreum
- highly motile - symbiotic, often found in deep sea fish - used to assess biological toxicity within a system