Waec Model Questions Vol1 2017 Biology Question 46
Practice objective / multiple choice question 46 from the 2017 Waec Model Questions Vol1 Biology examination.
A bacterial strain doubles every 20 min under optimal conditions. A mutant strain has a generation time that is 30 % longer and is resistant to antibiotic X but sensitive to antibiotic Y. Both strains are inoculated with 1.0 × 10⁴ cells. (a) Determine the generation time of the mutant strain. (b) After 5 h of growth without antibiotics, calculate the expected number of mutant cells. (c) If the mutant culture is then treated with antibiotic Y for 2 h, which reduces the viable population by 80 %, how many cells remain?
Answer Options
About This Question
This is Waec Model Questions Vol1 2017 Biology Question 46. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.