Neco 2018 Biology Question 2

Practice objective / multiple choice question 2 from the 2018 Neco Biology examination.

Neco 2018 Biology Objective / Multiple Choice Hard Difficulty

Question 2 NECO • 2018 • BIOLOGY • objective

A bacterial strain has a spontaneous mutation rate to resistance against antibiotic X of \(2\times10^{-8}\) per cell division. After 12\,h of growth the culture contains \(5\times10^{9}\) cells. The minimum inhibitory concentration (MIC) for the wild‑type is 4\,\(\mu\)g\,mL\(^{-1}\) and for resistant mutants is 16\,\(\mu\)g\,mL\(^{-1}\). The clinician wants to use a single concentration of antibiotic X that will inhibit at least 99\% of the total population. What is the minimum concentration that should be administered, taking into account the probability that resistant mutants are present?

Correct Answer A. 16 µg mL⁻¹

B. 4 µg mL⁻¹

C. 8 µg mL⁻¹

D. 12 µg mL⁻¹

Correct Answer

Correct Option:

16 µg mL⁻¹

This is Neco 2018 Biology Question 2. It is one of the objective questions from the 2018 Neco Biology examination.

Difficulty level: Hard .

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support