Q27 A 10-1 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is plated on solid media, and 265 colonies of bacteria grow on the plate.  Assuming each colony came from a single bacterium, how many bacteria are in a single mL of the original culture? Express your answer as a whole number. Since only 0.1 mL is put on the plate, this counts as an extra dilution!!! Any time less than 1 mL is transfered, a dilution is being performed. Any time more than 1 mL is transfered, a concentration is being performed.

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Q27

A 10-1 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is plated on solid media, and 265 colonies of bacteria grow on the plate. 

Assuming each colony came from a single bacterium, how many bacteria are in a single mL of the original culture? Express your answer as a whole number.

  • Since only 0.1 mL is put on the plate, this counts as an extra dilution!!!
  • Any time less than 1 mL is transfered, a dilution is being performed.
  • Any time more than 1 mL is transfered, a concentration is being performed.
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