Biological-Classification-And-System-Of-Classification Question 766

Question: If the generation time of a bacterium is 40 minutes and a culture containing $ 10^{7} $ cells/ml is grown for 4 hours, then calculate its population after that period.

Options:

A) $ 64\times 10^{7} $

B) $ 32\times 10^{7} $

C) $ 6\times 10^{7} $

D) $ 40\times 10^{7} $

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Answer:

Correct Answer: A

Solution:

Generation time is 40 minutes.

$ \therefore $ Number of divisions is $ \frac{240}{40}=6 $ Number of bacteria are = $ 2^{n}=2^{6}\times 10^{7} $ $ =64\times 10^{7} $