Lec 6-3 - Streptococci Flashcards

1
Q

streptococci are gram blank

A

positive

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2
Q

strep are catalase blank unlike staph

A

negative

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3
Q

strep are blank as it relates to oxygen

A

facultative anaerobes

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4
Q

strep can be classified based on blank patterns

A

hemolytic

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5
Q

clear complete hemolysis

A

beta

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6
Q

green/partial hemolysis

A

alpha

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7
Q

no hemolysis

A

gamma

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8
Q

phylogenetic analysis of blank is now used to categorize strep

A

16S RNA

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9
Q

alpha hemolytic gram positive strep that has 19 species like s mutans and sobrinus

A

viridians strep

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10
Q

viridians strep can be differentiated from strep pneumoniae because it is

A

optochin resistant, bile resistant, cant make insulin, no capsule

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11
Q

viridians strep is treated by blank

A

penicillin

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12
Q

viridians also form blank in oral cavity

A

biofilms

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13
Q

viridians can also lead to blank in the heart

A

strep endocarditis

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14
Q

strep pneumoniae are blank hemolytic, and blank/blank sensitive

A

alpha, optochin/bile

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15
Q

things that strep pneumoniae cause

A

acute otitis media, pneumonia, bacteremia, meningitis

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16
Q

strep pneumoniae is a blank coccus

17
Q

strep pneumonia makes a polysaccharide blank

18
Q

blank can prevent pneumococcal disease

A

breast feeding

19
Q

pneumovax and prevnar are blank for pneumonia but only cover this many strains

A

vaccine, 1/4 or 1/3

20
Q

group A strep is aka blank

A

strep pyogenes

21
Q

strep pyogenes is blank hemolytic, gram blank, and grow in blank

A

beta, positive, chains

22
Q

strep pyogenes causes these infections

A

strep throat, scarlet fever, impetigo, cellulitis

23
Q

strep pyogenes causes these invasive infections

A

bacteremia, toxic shock, necrotizing fasciitis

24
Q

post infectious sequelae of strep pyogenes

A

rheumatic fever, glomerulonephritis

25
there are many strep blank factors
virulence
26
virulence factor that has 100 M types and involved in mucosal infection but is less important during bacteriemia/sepsis.... anti phagocytic and adherence
M protein
27
one of the most important virulence factors that causes toxic shock and scarlet fever
pyrogenic exotoxins
28
group b strep is aka blank
strep agalactiae
29
strep agalactiae is normal in blank and blank
intestinal/genital tracts
30
strep agalactiae is diagnosed by secreting blank and causes blank in presence of staph aureus
cAMP, beta hemolysis
31
group d strep is now called blank
enterococcus
32
enterococcus are blank in the human gut
commensals
33
enterococcus are blank hemolytic and diplococcus
gamma
34
enterococcus are blank resistant to antibiotics
intrinsically
35
enterococcus survive in blank conditions
harsh