Thirty‐six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in the original sample?

Thirty‐six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in the original sample?



A) 4
B) 9
C) 18
D) 36


Answer: D) 36


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