To prevent the spread of
microorganisms.
⑦._
⑰@π*I
I@π!I
To lessen contamination risks from
airborne particles landing on them and to prevent the
accumulation of water condensation that could disturb
or compromise a culture.
The colonies should look identical.
Isolate bacteria by dilution techniques by using spread and streak plate.
Bacteria will be in a straight line, they will
be separate from one another.
:
1 mm
Circular
Entire
Convex
White
2 mm
Circular
Entire
Convex
White
Yes
Two
Size, colony, morphology, color.
/
Cool loop, keep plate covered.
X
Presence of unwanted microorganisms.
A contaminant would
be one growing in an area where you did not streak.
TNTC
None will be isolated.
Yes, different bacteria grow in different oxygen requirements.
More than one colony together and burn off bacteria.
No, but depends on specimen size, technique/loop transfer process.
⑲
:
64,000
3,200
u