Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microbiology 2 > M8 Oral Streptococci > Flashcards

M8 Oral Streptococci Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what is an example of gram +ve aerobic

A

micrococci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

whats an ample of gram +ve anaerobic

A

peptrococcus

peptostreptococcus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is an example of facultative gram +ve

A

catalase +ve - staphylococus

cataras -ve - streptoccuss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the largest single group of bacteria isolated from the mouth and can be cultivated from all oral sites

A

oral streptococci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what do streptococci compromise orally

A

23% plaque
30% gingival crevice
50% tongue
50% saliva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are streptococci sep mostly

A

facultative

little obligate anaerobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what do stretococci prod in anaerobic condos

A

lactic acid - reducing potential pH fro demineralisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what are the 4 main groups of streptococci spp

A

mutans (alpha) - tooth surface
salivarius (alpha) - tongue
angionosus (beta) - plaque
oralis (alpha) - tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what does the 23% of approximal plaque contain

A

mutans 2%
sanguines 6%
saliavrius 1%
angionosus 0.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the in silico comparison of genomes

A

genes can be exchanged including resistance determinants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does the excnae of genes mean

A

core genes
shared flowing of genes
abel to take up diff dn
acquire diff features from organisms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

hat is alpha haemolysiss

A

oral streptococci
green (choc)
partial haemolysis (RBA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the beta haemolysis

A

pathogenic streptococici
clear haemolysis
complete haemolyssi on blood agar
s. progenes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is gamma haemolyss

A

no haemolysis
enterococcus faecilis
no haemolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

on blood agar what does alpha, beta and gamma haemolysis do

A

alpha - greening of colonies (pneumonia)
beta - clearing, vlanceield, greening
gamma -normal, no haemolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is dental caries

A

localised dissolution of enamel
may advance to dentine and pulp
common in pits and fissures
accumulation of plaque

17
Q

what are some sub sp of mutant

A

s mutans
s sobrinus
s cricetus

18
Q

what is the mutant group lead to

A

cause of tooth decay

wide range carbs

19
Q

how does s mutans do for caries

A

bind and colonies - extracell polysaccs
prod acid high rate from sugar - acidogenic
tolerate high conc of acid - acidic

20
Q

what is the most popular carb to use fro carb metab

A

sucrose

more energy in bond cause more dissolution enamel grow faster

21
Q

what are virulence factors imp for

A

colonisation
establish biofilm
acid prod
survival at low pH

22
Q

what is the oralis group

A

heterogeneous group of related streptococci

23
Q

what are some spp of oralis

A 
s oralis
s sanguinis
s gordonii
s mites
s crista
24
Q

what do most of orals group produce

A

IgA protease

imp virulence factor

25
Q

what do s sanguines and s gordoniii do

A

produce extra cell sol and insole gluons

earlycolonisers

26
Q

what does s sanguinis do

A

bacterial endocarditis

27
Q

what does s gordonii do

A

close to s sanguinis but prod alpha amylase rather than IgA protease
cause infective endocarditis
PadA surface protein - adhesion and interacts with platelet via fibrinogen receptor

28
Q

what does s mitis do

A

prefer non jeratinsied in mouth such as cheek

ma cause bacteraemia endocarditis and abscesses

29
Q

what does s crista do

A

similar to s sanguinis but with tufts of fibrils on surface

cons cobs

30
Q

what are the isolation frequency of s sanguines, oralis nd gorfonii

A

sanguines - 32%
oralis - 30%
gordonii - 13%
other - 5%

31
Q

what is hermaetogenous spread

A

distributed by way of blood stream

s gordonii

32
Q

what is s salivarius

A

most dom in saliva
prefer keratinsisded statures
not in plaque

33
Q

how i saivarius beneficial microbe

A

prod bactericides

assc with infections

34
Q

what is s vestivularis

A

non pathogenic

non polysacc prod

35
Q

what is anginosus group

A

beta haemolysis

36
Q

what are the sep of anginosus

A

s anginosus
s constellates
s inetrmidus

37
Q

where are a anginsosus

A

in plaque

isolated form many infections in body

38
Q

what is s pneumonia

A

alpa haemolytic
sensitive to optochin
resp pathogen

39
Q

what si an organism sensitive to bacitracin

A

s progenies

Microbiology 2 (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions