3/4/24 Flashcards
1
Q
standard plate count allows ______________ to estimate the _________ ________ in a ____ sample using _________ __________
A
standard plate count allows (microbiologist) to estimate the (population density) in a (liquid) sample using ( serial dilution).
2
Q
How many μl of the appropriate dilutions are added to the plates
A
100
3
Q
What is the goal of this exercise
A
to produce at least 1 countable plate
4
Q
How many colonies make a plate countable
A
30 - 300
5
Q
formula for plate count
A
D2 = (V1D1)/ V2
Undiluted samples are always expressed as 1
6
Q
CFU
A
Colony Forming units , # of colonies counted on a plate
7
Q
OCD
A
Original cell density
8
Q
OCD formula
A
OCD = CFU/(DxV) = CFU/(original sample volume)
