Neco 2024 Biology Question 16
Practice objective / multiple choice question 16 from the 2024 Neco Biology examination.
During a bacterial growth experiment, the optical density at 600 nm (OD600) of a culture was 0.5 at time 0 h. After incubating at 37 °C for 4 h, the OD600 increased to 2.0. It is known that an OD600 of 0.5 corresponds to \(5\\times10^{8}\) cells mL\(^{-1}\). The temperature is then shifted to 42 °C, where the specific growth rate drops by 30 % compared with the rate at 37 °C. Assuming exponential growth continues, what is the expected OD600 after an additional 2 h at 42 °C? Give your answer to two decimal places.
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About This Question
This is Neco 2024 Biology Question 16. It is one of the objective questions from the 2024 Neco Biology examination.
Difficulty level: Hard .
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