Waec Model Questions Vol1 2018 Biology Question 17
Practice objective / multiple choice question 17 from the 2018 Waec Model Questions Vol1 Biology examination.
A bacterial culture starts with 2 × 10⁶ cells. During the exponential phase the population doubles every 30 minutes. After 2 hours an antibiotic is added that reduces the growth rate by 40 % (i.e., the number of generations per hour becomes 60 % of the original). The culture is then allowed to grow for another 3 hours, after which the cell count is measured as 3.9 × 10⁸ cells. Assuming the growth remains exponential after the antibiotic addition, what is the new generation time (in minutes) under the antibiotic?
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About This Question
This is Waec Model Questions Vol1 2018 Biology Question 17. It is a objective / multiple choice question from the 2018 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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