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 a objective / multiple choice question from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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