Summary of characteristics of bacteria-table

Bacteria Morphology Culture
characteristics
Streptococcus
Gram positive
Shape: spherical
Oval
Size: 0.5-1
micrometer
Arrangement: in
chain or pair
Motility:
nonmotile
Spore:
Non spore
forming
T: 37 C
Crystal violent
blood agar
Classification:
1.Based on O2:
Aerobic
Facultative
anaerobic
Obligate
anaerobic.
2. Based on
Hemolytic.
Property on blood
agar medium.
Alpha
hemolytic
(partial
hemolysis-
Green
coloration)
Beta hemolytic
(complete
hemolysiscolorless)
Gamicronsa
hemolytic (no
hemolysis)
Biochemi
cal
reactions
Catala
se
negati
ve
Ferme
nt
Sever
al
sugars
Produ
cing
acid,
but
not
gas
Antigenic
structure
Capsule
Cell wall:
Outer layer
Middle layer
Inner layer
Toxins
Exotoxins:
-Hemolysins
-pyrogenic
exotoxin
Pathogenesis/spe
ctrum of disease
-Respiratory
infection
-Skin and soft tissue
infection
-Genital infection
- Non-Suppurative
complication
Other if only
mentioned in the
syllabus