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A Sample of Milk Is Tested for Its Bacterial Content

Question 18

Multiple Choice

A sample of milk is tested for its bacterial content in a plate count assay.A one-milliliter sample of the milk is diluted in a 1:10 dilution series.One milliliter of the third dilution tube is plated in a pour plate.After incubation,the plate has 54 colonies,indicating that the original milk sample contained


A) 54 cells per milliliter.
B) 540 cells per milliliter.
C) 5,400 cells per milliliter.
D) 54,000 cells per milliliter.
E) 540,000 cells per milliliter.

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