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2 years ago

12

If you suspect your culture of bacteria has 25 x 107 cells per mL, what would you want the final dilution to be in order to end

up with 100 cfu on a plate?

1 answer:

Delicious77 [7]2 years ago

4 0

Answer:

dilution = 2.5*10^6

Explanation:

Given:

- Number of colonies N = 100 cfu

- The Volume of cells = 25*10^7 cells / ml

Find:

the final dilution

Solution:

- The expression relating the the colonies forming unit with cells//volume is given as:

Bacteria/ml = cfu*dilution

dilution = Volumetric cells/ cfu

dilution = 25*10^7 / 100

dilution = 2.5*10^6

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Explanation:

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