Igcse Model Questions Vol1 2023 Biology Question 36
Practice objective / multiple choice question 36 from the 2023 Igcse Model Questions Vol1 Biology examination.
A bacterial culture starts with \(1.0 \times 10^{6}\) cells. After 2 h without any antibiotic the population rises to \(8.0 \times 10^{6}\) cells. When a certain antibiotic is added at time zero, the count after the same 2 h is \(2.5 \times 10^{6}\) cells. Assuming exponential growth, determine (a) the generation time of the bacterium in minutes, (b) the percentage reduction in population caused by the antibiotic after 2 h, and (c) based on a reduction of less than 90 % being classified as bacteriostatic, state whether the antibiotic is bacteriostatic or bactericidal.
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This is Igcse Model Questions Vol1 2023 Biology Question 36. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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