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Unformatted text preview: C. Average 15 - 20 min. (varies - 10 minutes to 24 hrs.) BACTERIAL GROWTH A. Increase in numbers (size of population) B. Constantly doubles - increases exponentially C. Expressed as logarithmic function of base 2 x 1. Population doubles - 2 2. X - # times population doubles D. 1 cell reproducing every 20 min. over 1 million cells in 7 hours 1 billion in 10 hrs. in 24 hrs. number followed by 2I zeros. . MEASUREMENT OF BACTERIAL GROWTH A. Methods of measurement : 1. Optical density 2. Plate count 3. Direct microscopic count...
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