Neco Model Questions Vol1 2024 Biology Question 29
Practice objective / multiple choice question 29 from the 2024 Neco Model Questions Vol1 Biology examination.
An initially inoculated bacterial culture contains \(2\times10^{5}\) cells. In the first three hours the culture grows exponentially according to \(N = N_{0}\,2^{t/g}\), where \(g\) is the generation time in minutes and \(t\) is the elapsed time in minutes. After three hours the population reaches \(5\times10^{8}\) cells. The culture is then exposed to an antibiotic that shortens the generation time by 20 % for the remaining period. Assuming the antibiotic is added exactly at the three‑hour mark, what is the expected number of cells after a total of six hours? Express your answer in scientific notation to two significant figures.
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This is Neco Model Questions Vol1 2024 Biology Question 29. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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