Gram- Positive Cocci, Catalase Positive Flashcards

1
Q

Catalase- producing, gram-positive cocci, non motile, non-spore forming, aerobic, “Bunch of grapes”. Colonies are cream-colored white or rarely light gold, and “buttery looking”

A

Staphylococcus

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2
Q

Gram positive cocci, catalase positive most clinically significant species of staphylococci

A

Staphylococcus aureus

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3
Q

Are Heat stable endotoxin that cause various, symptoms, including diarrhea and vomitting

A

Endotoxin

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4
Q

Cause nearly all cases of menstruating associated toxic shock syndrom

A

Toxic Shock Syndrom Toxin 1

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5
Q

it is also known as epidermolytic toxin. it causes the epidermal layer of the skin to slough off and is known to cause staphylococcal scalded skin syndrom

A

Exfoliative toxin

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6
Q

in addition to lysing erythrocytes, it also damage platelets and macrophages and cause severe tissue damage

A

Alpha hemolysins

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7
Q

Acts on the sphingomyelin in the plasma membrane of erythrocytes

A

beta hemolysins

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8
Q

causes bacterial cells to agglutinate in plasma

A

staphylocoagulase

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9
Q

Hydrolyzes hyaluronic acid

A

Hyaluronidase

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10
Q

Acts on lipids present on the surface of the skin, particularly fats and oil secreted by the sebaceaous glands

A

Lipases

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11
Q

it has the ability to bind the Fc portion of immunoglobulin igG

A

protein A

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12
Q

Is a relatively mild inflammation of a hair follicle or oil gland, the infected area is raised and red

A

Folliculitis

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13
Q

it is an extension of folliculitis, are large, raised, superficial, abscesses

A

furuncles

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14
Q

Occur when larger, more invasive lesions develop from multiple furuncles

A

Cabuncles

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15
Q

Causes staphylococcal pustules that are large and surrounded by a small zone of erythema

A

Bullous impetigo

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16
Q
  • It is a bullous exfoliative dermatitis that occurs primarily
    in newborns and previously healthy young children
A

Scalded Skin snydrom

17
Q
  • It is a rare but potentially fatal, multisystem disease
    characterized by a sudden onset of fever, chills, vomiting, diarrhea, muscle
    aches, and rash, which can quickly progress to hypotension schock
A

toxic shock syndrom

18
Q

-It is most commonly drug induced, but some cases
have been linked to infections and vaccines

A

Toxic Epidermal Necrolysis

19
Q
  • Enterotoxin A and B have been associated with gastrointestinal
    disturbances
A

Food Poisoning-

20
Q

infections are predominantly hospital acquired, Instrumentation procedures such as catheterization,
medical implantation and immunosuppressive therapy
 It is a common cause of healthcare-acquired UTIs

A

Staphylococcus epidermidis

21
Q

It has been associated with UTIs in young women

A

Staphylococcus saprophyticus

22
Q

It can cause both community-associated and hospital acquired infections

A

Staphylococcus lugdunensis

23
Q

is a proprietary selective and differential medium for
isolation and identification of S. aureus

A

CHROMagar Staph aureus

24
Q

colonies are usually small – to medium sized, nonhemolytic gray
to white colonies

A

Staphylococcus epidermidis

25
Q

forms slightly larger colonies with about 50% of the strains
producing yellow pigment

A

Staphylococcus saphrophyticus

26
Q

produces medium-sized colonies, with moderate or weak
hemolysis and variable pigmentation

A

Staphylococcus heamolyticus

27
Q

can be used to differentiate S. aureus
(negative) from S. lugdunensis, S. intermedius and S. schleiferi (positive)

A

pyrrolidonyl arylamidase activity