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micro lab > Midterms (gram positive) > Flashcards

Midterms (gram positive) Flashcards

1
Q

Catalase Positive

A

Staphylococcus

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2
Q

Catalase Negative

A

Streptococcus

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3
Q

Enzyme that able to decompose hydrogen peroxide into water and oxygen

A

Catalase Test

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4
Q

Creates clot

A

Coagulase test

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5
Q

Coagulase positive

A

Staphylococcus aureus

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6
Q

Coagulase negative

A

Staphylococcus saprophyticus
Staphylococcus epidermidis

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7
Q

An enzyme that allows the conversion of fibrinogen to fibrin

A

Coagulase

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8
Q

Cause clotting

A

Fibrin

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9
Q

An antibacterial agent

A

Novobiocin Test

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10
Q

Zone where there’s no growth

A

Zone of Inhibition

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11
Q

Novobiocin-resistant

A

Zone of inhibition is less than 16 mm

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12
Q

Novobiocin-sensitive

A

Zone of inhibition is greater than 6 mm

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13
Q

Novobiocin resistant

A

Staphylococcus saprophyticus

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14
Q

Novobiocin sensitive

A

Staphylococcus epidermidis

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15
Q

Differential Media

A

Mannitol Salt Agar

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16
Q

Culture media where we can differentiate family and species

A

Mannitol Salt Agar

17
Q

Presence of Golden yellow pigment indicates the presence of

A

Staphylococcus aureus

18
Q

Porcelain white pigment

A

Staphylococcus epidermidis

19
Q

No pigment

A

Staphylococcus saprophyticus

20
Q

Staphylococcus

A

Round shape bacteria that are in CLUSTERS “grape like”

21
Q

Staphylococcus aureus
Virulence Factors

A

Protein A
Coagulase
Hemolysin
Leukocidins
Penicillinase

22
Q

aka beta-lactamase

A

Penicillinase

23
Q

enzyme that allows S. aureus to resist the antibacterial property of PCN or beta-lactam antibiotics

A

Penicillinase

24
Q

MRSA

A

Methicillin Resistant Staphylococcus Aureus

25
Q

next step to MRSA

A

Vancomycin

26
Q

VRSA

A

Vancomycin Resistant Staphylococcus Aureus

27
Q

next step to VRSA

A

Linezolid

28
Q

Diseases caused by EXOTOXIN release

A

Gastroenteritis
Toxic shock syndrome (TSS)
Scalded skin syndrome (SSS)

29
Q

Toxin that cause SSS

A

Exfoliatin

30
Q

manifested as food poisoning
→ nausea and vomiting

A

Gastroenteritis

31
Q

TSS toxin 1 – toxin responsible

A

Toxic shock syndrome (TSS)

32
Q

aka Ritler’s Disease or Lyells Disease

A

Scalded Skin Syndrome

33
Q

common to newborns

A

Scalded Skin Syndrome

34
Q

Exposed dermis
Death due to sepsis

A

Scalded Skin Syndrome

35
Q

Disease caused by DIRECT ORGAN INFECTION

A
  1. Pneumonia - LUNGS
  2. Meningitis - BRAIN
  3. Osteomyelitis - BONES
  4. Acute Endocarditis - HEART
  5. Septic arthritis - JOINTS
  6. Skin infections
36
Q

Skin infections:

A

Impetigo - Honey crusted lesions
Cellulitis
Boils/Local Skin Abscesses- pigsa
Furuncle- bigger furuncle
Carbuncle- untreated boils

37
Q
A

micro lab (5 decks)

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