You sample cole slaw for bacteria soon after purchase, and after it has been left out on the kitchen counter for 6 hours (room temperature), and after 12 hours (at room temperature). From the data below, CALCULATE the generation time of the bacteria in this sample (at room temperature) – that is, the time it takes for the bacterial population to double in number. Soon after purchase: 4.0 x 103 bacteria per ml At 6 hours at Room Temperature: 1.9 x 105 bacteria per ml ( = 192 x 103 bacteria per ml) At 12 hours at Room Temperature: 1.2 x 107 bacteria per ml ( = 12,300 x 103 bacteria per ml)
You sample cole slaw for bacteria soon after purchase, and after it has been left out on the kitchen counter for 6 hours (room temperature), and after 12 hours (at room temperature). From the data below, CALCULATE the generation time of the bacteria in this sample (at room temperature) – that is, the time it takes for the bacterial population to double in number.
Soon after purchase: 4.0 x 103 bacteria per ml
At 6 hours at Room Temperature: 1.9 x 105 bacteria per ml ( = 192 x 103 bacteria per ml)
At 12 hours at Room Temperature: 1.2 x 107 bacteria per ml ( = 12,300 x 103 bacteria per ml)
What do you calculate the generation time to be?
(generation time is the time needed for the population to double in size )
Hint: What is double the initial population?
Hint: What is the
Hint: How many doublings does it take to get to the population observed at 6 hours? 12 hours? :
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