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BACTE LEC > Lec 6 > Flashcards

Lec 6 Flashcards

1
Q

Resides in the skin and mucous membrane of humans and animals

A

Staphylococcus epidermis

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2
Q

Colonies are smooth, circular and usually pale transparent white

A

Staphylococcus epidermis

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3
Q

Resistant to novobiocin and nalidixic acid

A

Staphylococcus saprophyticus

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4
Q

Common cause of UTI

A

Staphylococcus saprophyticus

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5
Q

Recovered from compromised patients, particularly drug users, as an agent of endocarditis and septicemia

A

Stomatococcus mucilaginosus

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6
Q

Drug of choice for Stomatococcus mucilaginosus

A

PCN

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7
Q

No acid in glycerol in the presence of erythromycin

A

Micrococcus

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8
Q

Selective and differential medium and is commonly used to isolate staphylococci from clinical specimen

A

Mannitol salt agar

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9
Q

Agent of dog bite infection

A

S. intermedius

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10
Q

Never been implicated as a human pathogen

A

S. hyicus

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11
Q

S. aurens pigment

A

Golden yellow

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12
Q

S. epidermis pigment

A

white

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13
Q

S. saprophyticus pigment

A

Lemon yellow

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14
Q

Majority are free living saprophytes

A

Micrococcus
Planococcus

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15
Q

Inhabits surface of primates and other mammals

A

Staphylococcus and Stomatococcus

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16
Q

Invade the bloodstream, metastasize and appear in the urine or forming abscess in various body organs or producing septic shock

A

Staphylococcus aureus

17
Q

Endopeptidase that cleaves the peptide linkages

A

Lysostaphin

18
Q

Grow as large, entire, very glossy, smooth, opaque, butyrous, convex

A

5% sheep blood agar of Staphylococcus saprophytics

19
Q

Gram positive cocci in tetrads

A

Micrococcus

20
Q

Micrococcus are found in?

A
  1. Skin
  2. Mucosa
  3. Oropharynx
21
Q

Young women and in older men who have indwelling catheters

A

Cystitis

22
Q

Adhere to inorganic surfaces like catheter

A

Biofilms

23
Q

Insertion of artificial valves, prostatic devices, intravascular catheters

A

Bacterial endocarditis

24
Q

Can also be found in wounds

A

Staphylococcus aureus

25
Q

Furazilodone test is susceptible to?

A

Staphylococcus

26
Q

Differentiates micrococcal and staphylococcal species from streptococcal species

A

Catalase test

27
Q

Catalase test of Staphylococcus and Micrococcus

A

(+)

28
Q

Catalase test of Streptococcus

A

(-)

29
Q

Clumping factor

A

Bound

30
Q

Extracellular coagulase

A

Free

31
Q

Differentiate gram positive, catalase-positive cocci (micrococci from staphylococci)

A

Microdase test

32
Q

Detects the enzyme oxidase

A

Microdase test

33
Q

Conversion of fibrinogen to fibrin

A

Coagulases

34
Q

Toxic to RBCs, WBCs, platelets, and hepatocytes

A

Alpha toxin

35
Q

Toxic to WBCs, preventing clearance of the organisms

A

Gamma toxin

36
Q

Susceptible to Novobiocin

A

Staphylococcus epidermis

BACTE LEC (5 decks)

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