Gce Model Questions Vol1 2020 Biology Question 14
Practice objective / multiple choice question 14 from the 2020 Gce Model Questions Vol1 Biology examination.
A culture of *E. coli* starts with \(1\times10^{3}\) cells. Under optimal conditions the generation time is 20 min. After 2 hours an antibiotic is added that doubles the generation time for the remaining period. If the culture is observed for a total of 5 hours, how many cells are present at the end (express your answer in scientific notation to two significant figures)?
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About This Question
This is Gce Model Questions Vol1 2020 Biology Question 14. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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