Gram+cocci Flashcards

1
Q

What allows S. Epidermidis to adhere to valves?

A

Polysaccharide slime

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2
Q

Production of what allows viridians streptococcus to cause dental caries?

A

Acid

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3
Q

Gram positive cocci in chains and do not show hemolysis on blood agar may cause ….?

A

Endocarditis

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4
Q

What is the virulence factor of Staphylococcus aureus?

A

Protein A

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5
Q

What is the virulence factor of streptococcus pneumonia?

A

Capsule

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6
Q

Which of the following is part of the normal flora in the skin?

A

Staphylococcus epidermidis

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7
Q

Which gram positive diplococcic causes meningitis?

A

S. pneumonia

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8
Q

which of the following protects the skin ?

A

Staphylococcus Spp.

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9
Q

what is the function of panton-valentine leucicidin in staphylococcus aureus ?

A

Lysis of PMN

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10
Q

What is the clumping factor in staphylococcus aureus involved in?

A

clot formation

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11
Q

What allows staphylococcus epidermidis to adhere to artificial heart valves, prosthesis, and catheters?

A

Polysaccharide slime (biofilm)

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12
Q

Which organism is highly found in the nose flora? * Final 2009

A

Staphylococcus aureus

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13
Q

taphylococcus epidermidis is considered part of the normal flora, however, it can cause many diseases in immunocompromised hosts. What is its virulence factor? Final 2009

A

Slime

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14
Q

A patient is suffering from bacterial pharyngitis. Lab results showed gram positive cocci. What is the likely cause?*Final 209

A

Streptococcus pyogenes

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15
Q

Which of the following is a cause of meningitis & septicemia in neonates?

A

S. Agalactiae

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16
Q
Which bacteria is the most likely cause of severe community acquired pneumonia?
A-streptococcus pyrogens 
B- streptococcus agalactia
C- streptococcus pneumonia 
D- enterococcus
A

C-streptococcus pneumonia

17
Q

What is the clumping factor in staphylococcus aureus involved in?

A

clot formation

18
Q

What allows staphylococcus epidermidis to adhere to artificial heart valves, prosthesis, and catheters?

A

Polysaccharide slime

19
Q

What causes honeymoon disease?

A

Staphylococcus Saprophyticus

20
Q

Production of which substance helps the adherence of viridian streptococci to dental enamel?

A

Carbohydrate

21
Q

Which of the following contributes to persistence of s. aureus on foreign bodies?
A. Lipoteichoic acid
B. Peptidoglycan
C.Extracellar polysaccharides

A

Extracellar polysaccharides

22
Q
What is produced Viridans streptococci to adhere to the heart valve?
A. Acid
B. Carbohydrate
C. M protein
D. Extracellular dextran
A

Extracellular dextran

23
Q

Which of the following bacteria is found permanently on the skin?( FB2 2014 )

A

Staphylococcus

24
Q

What is the test for differentiating between streptococcus & staphylococcus?(FINAL 2014 )
A) Catalase test
B) coagulase test

A

Catalase test