•Most
microbes around us grow between room temperature to body temperature (28-37oC)
•We
put agar plates in a 37oC
room for 2 days to get the microbes to grow on the plates
•Each
“dot” (also called a colony) on the plate originated from 1 single microbial
cell. The single cell multiplies and grows on the plate, making a visible
colony of microbial cells.
•The
smaller dots are bacterial or yeast (generally the coloured ones are yeast), and
the big fuzzy ones are fungi.
Are
the number of colonies on your agar plate surprising? Did you expect to see
more colonies? Or less? Can
you tell the bacteria and yeast colonies from the fungal colonies?
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