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Biology
Posted 4 months ago

The bacterium Bacillus symbiodinium has a generation time of 20 minutes. Starting with one cell in log phase, how many minutes does it take to produce about 1,000 cells (2n=1000)(2 n=1000) ? Assume all cells remain viable
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Answer from Sia
Posted 4 months ago
Answer
It takes 200 minutes to produce about 1,000 cells from one cell of Bacillus symbiodinium.
Solution
a
Determine the number of generations required to reach 1,000 cells: Use the formula 2n=10002^n = 1000 to find n
b
Calculate the number of generations: Solving for n gives n=log210009.97n = \log_2{1000} \approx 9.97. Since we cannot have a fraction of a generation, we round up to 10 generations
c
Calculate the total time: Multiply the number of generations by the generation time. For Bacillus symbiodinium, the generation time is 20 minutes, so 10×20=20010 \times 20 = 200 minutes
Key Concept
Generation time and exponential growth
Explanation
The generation time is the time it takes for a population to double. Bacterial growth can be modeled exponentially, and the time to reach a certain population size can be calculated by determining the number of generations required and multiplying by the generation time.

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