Staph and Micrococcus (Exam 3) Flashcards

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1
Q

Which species of this group is known to have a GPC gram stain with tetrads?

A

Micrococcus

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2
Q

What are the distinguishing factors of Micrococcus colony morphology?

A

Yellow color and no hemolysis

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3
Q

What are the distinguishing factors of Rothia colony morphology?

A

STICKY, Grey/white, no hemolysis

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4
Q

What are the distinguishing factors of S. saprophyticus colony morphology?

A

Bright white, no hemolysis

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5
Q

What are the distinguishing factors of S. aureus colony morphology?

A

Cream to golden colonies with beta or gamma hemolysis

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6
Q

Which of the staph species is coagulase positive and can be identified using the staph latex (clumping factor) test?

A

S. aureus

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7
Q

What are two other tests that can be used to ID S. aureus?

A

DNase test and Manitol Salt agar

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8
Q

Which organisms in this group can be identified by a positive Microdase test?

A

Micrococcus

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9
Q

Which of the CNS will most likely be found in a urine sample?

A

S. saprophyticus

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10
Q

Which of the CNS is notably PYR positive?

A

S. lugdunensis

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11
Q

What is the slime producing CNS that is known to acquire antibiotic resistance?

A

S. epidemidis

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12
Q

What is the catalase negative/anaerobic staph?

A

S. sacchrolyticus

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13
Q

What organism is the number one cause of sepsis?

A

S. aureus

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14
Q

Organisms ID: Yellow, GPC in tetrads, microdase positive

A

Micrococcus

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15
Q

Organisms ID: Negative for glucose fermentation, SS to Bacitracin and R to Furalozidone

A

Micrococcus

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16
Q

Organisms ID: Sticky, grey white, nonhemolytic, catalase variable

A

Rothia

17
Q

Organisms ID: Cream to white, Beta or nonhemolytic, PYR positive

A

Staph lugdenensis

18
Q

Where is Rothia usually recovered from as a pathogen?

A

Oropharyngeal, URT specimen