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e). A bacterial culture starts with 1000 bacteria and triples after 5 hours. Find the doubling
period and the amount of bacteria after 8 hours.

Ask by Frank Park. in Canada
Jan 21,2025

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Answer

The doubling period is approximately 3.15 hours, and after 8 hours, there are about 5,805 bacteria.

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Bonus Knowledge

Let’s dive into the fascinating world of bacteria! In this scenario, the culture starts with 1000 bacteria and triples in 5 hours, which means that after those 5 hours, there will be 3000 bacteria. To find the doubling time, we can use the formula for exponential growth. Since it triples in 5 hours, we can calculate that the doubling time is approximately 3.33 hours, using the formula for continuous growth rates.
Now, let’s calculate the number of bacteria after 8 hours. Since we know that every 5 hours, the culture triples, we can first account for the first 5 hours (3000 bacteria), and in the next 3 hours, which is a little over half of the doubling time, we can estimate to get about double. So, after 8 hours, there will be around 6000 bacteria, a testament to how rapidly bacteria can reproduce!

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