microorganiams are grown on
agar jelly ina pretri dish
they are grown in a
culture medium
they need different things to grow
carbohydrated
minerals ions
protins
vitimins
these are uaslly added to the
agar jelly
agar jelly can be poured …… and ….. when …… its poured into sallow round dishes called ……… ………
hot
sets when cold
pertir dishes
equitment is ………. to prevent ……………..
sterilied
contamination
unwanted microorganisms could make
harmful products
everything inculding the pretri dish must be
sterialised
the lid must be tapped on so no microorganisms can
get in
temperature must be keeped ……
low in school labs
this is because
there may be harmful pathogens produces