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?

Name: 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?
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Question

Quizplus · Accepted Answer

The number of colonies represents the number of viable cells in the original sample. Since 36 colonies grew from 1.0 ml of the undiluted sample, there were 36 cells per milliliter in the original sample.

Thirty-Six Colonies Grew in Nutrient Agar from 1