Gce Model Questions Vol1 2018 Biology Question 44
Practice objective / multiple choice question 44 from the 2018 Gce Model Questions Vol1 Biology examination.
A bacterial infection initially contains \(10^{6}\) cells. The bacteria double every \(20\) minutes. The spontaneous mutation rate that confers resistance to antibiotic X is \(1 \times 10^{-8}\) per cell division. Assuming the bacteria continue to divide without death for \(4\) hours, (a) estimate the expected number of resistant cells present after this period, and (b) using a Poisson approximation, determine whether it is more likely than not that at least one resistant cell is present. Provide the expected number (rounded to the nearest whole cell) and state "yes" if the probability exceeds \(0.5\), otherwise "no".
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About This Question
This is Gce Model Questions Vol1 2018 Biology Question 44. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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