Neco Model Questions Vol1 2022 Biology Question 15
Practice objective / multiple choice question 15 from the 2022 Neco Model Questions Vol1 Biology examination.
In a batch culture of bacteria, the optical density at 600 nm (OD\(_{600}\)) is measured as follows: at \(0\ \text{h}\) the OD is \(0.05\); at \(2\ \text{h}\) the OD is \(0.20\); at \(4\ \text{h}\) the OD is \(0.80\). Assuming exponential growth during this interval:\n\na) Determine the generation (doubling) time in minutes.\n\nb) An antibiotic is added at \(5\ \text{h}\) that reduces the specific growth rate by \(40\%\). Predict the OD\(_{600}\) at \(8\ \text{h}\). Give your answer to two decimal places.
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This is Neco Model Questions Vol1 2022 Biology Question 15. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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