Waec Model Questions Vol1 2017 Biology Question 24
Practice objective / multiple choice question 24 from the 2017 Waec Model Questions Vol1 Biology examination.
A bacterial culture starts with 2 × 10³ cells. It undergoes a lag phase of 2 hours (no growth) followed by exponential growth with a generation time of 30 minutes. After a total of 6 hours of incubation, an antibiotic is added that instantly kills 90 % of the cells. The culture then continues exponential growth with the same generation time for another 4 hours. What is the final number of cells (expressed in scientific notation to two significant figures) after the total 10 hours?
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About This Question
This is Waec Model Questions Vol1 2017 Biology Question 24. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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