Waec Model Questions Vol1 2021 Biology Question 13
Practice objective / multiple choice question 13 from the 2021 Waec Model Questions Vol1 Biology examination.
A culture of *Escherichia coli* starts with 5 × 10⁴ cells. During the exponential phase the population doubles every 20 min. After exactly 2 h an antibiotic is added that reduces the growth rate by 30 % (i.e., the doubling time increases by 30 %). Assuming the reduced rate continues, how many cells will be present after a total of 5 h from the start of the culture? Give your answer in scientific notation to two significant figures.
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About This Question
This is Waec Model Questions Vol1 2021 Biology Question 13. It is a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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