Cocci Flashcards

1
Q

Is group A Strep gram - or gram +

A

Gram +

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2
Q

What type of hemolysis does Group A strep exhibit?

A

Beta hemolysis

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3
Q

Is Group A strep sensitive to bacatracin?

A

Yes

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4
Q

Is there lancefield testing for Group A strep?

A

Yes

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5
Q

Is Group A strep Catalase negative or positive?

A

negative

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6
Q

What are the virulence factors of Group A strep?

A

1- Pili
2-M protein
3- Toxins

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7
Q

How is Group A strep treated?

A

penicillin and erythromycin

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8
Q

Which bacteria is associated with post steptococcal infections?

A

Group A strep

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9
Q

What is an example of Group B strep?

A

S. agalactinae

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10
Q

What are the lab properties of Group B strep?

A
Gram +
Catalase negative
beta hemolytic
resistant to bacitracin
lancefield stereotyping
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11
Q

What is the major diagnostic difference between Group A strep and Group B strep?

A

Group A is susceptible to bacitracin and Group B isnt

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12
Q

What bacteria is the CAMP test used for?

A

group B strep and S. aureaus synergy

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13
Q

What type of bacteria do females carry in their GU track?

A

Group B strep

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14
Q

How are women with GU group B strep treated?

A

With penicillin before the baby is born

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15
Q

What are the virulence factors of group B strep?

A

capsule that prevents phagocytosis

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16
Q

What are the lab properties of S. Pneumonia?

A
Gram +
Catalase negative
alpha hemolytic
bile/optochin sensitive
no lancefield stereotyping
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17
Q

What is the virulence factor of S. pneumonia?

18
Q

How is s. Pneumonia treated and prevented?

A

Treated by penicillin and cephalosporin. Prevention is polyvalent vaccine

19
Q

Is S. viridans sensitive to bile/ optochin sensitive or resistant?

20
Q

Is S. viridans alpha or beta hemolytic?

21
Q

Which bacteria uses sugar metabolizing enzymes as a virulence vactor?

A

S. viridans

22
Q

Where is S. viridans typically found?

23
Q

What type of bacteria is S. facalis?

A

enterococci

24
Q

What are the lab properteis of S. facalis?

A

Gram +
Catalase neg
Gamma hemolytic
resitant to bile/ optochin

25
Where is S. facalis usually found?
The colon
26
Is S. Aureus gram + or gram -?
gram +
27
Which bacteria is resistant to salt?
S. aureus
28
What are the virulence factors of S. aureus?
Protein A Capsule Coagulase Toxins
29
What are S. aureus' response to catalase, coagulation, and hemolytic?
catalase +, coagulase +, beta hemolytic
30
What is complicating about the treatment for S. aureus?
If has multi drug resistance on a plasmid
31
Where is S. epidermidis typically found?
the skin
32
What are the hemolytic properties of S. saprophyticus?
non hemplytic
33
What are the lab properties of N. meningitides?
Gram - Maltose ferment + multiple serotypes
34
What are the virulence factors of N. meningitides?
capsule | LPS toxin
35
Does N. gonhorrhoeae ferment maltose?
no
36
Which bacteria has pili and LOS as virulence factors?
N. gohnorrheoeae
37
Where does N.gohnorrhoeae typically infect?
the GU tract
38
Is peptostreptococcis alpha, beta, or gamma hemolytic?
gamma
39
How does peptostreptococcis make ATP?
obligate anaerobes
40
Where is eptostreptococcis found?
the mouth, resp track, GU track, bowl