Neco Model Questions Vol1 2019 Biology Question 26

Practice objective / multiple choice question 26 from the 2019 Neco Model Questions Vol1 Biology examination.

Neco Model Questions Vol1 2019 Biology Objective / Multiple Choice Hard Difficulty
Question 26 NECO_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

A bacterial culture grows from \(2.0\times10^{6}\) cells to \(1.6\times10^{8}\) cells in 4 hours under optimal conditions. Assuming exponential growth, (a) determine the generation time in minutes, and (b) if a bacteriostatic drug reduces the effective growth rate by 30%, what will be the population after the same 4‑hour period? Give the population rounded to the nearest hundred thousand cells.

Answer Options

A. Generation time ≈ 45 min; population ≈ 4.2×10⁵ cells
B. Generation time ≈ 50 min; population ≈ 3.9×10⁵ cells
Correct Answer C. Generation time ≈ 38 min; population ≈ 5.5×10⁵ cells
D. Generation time ≈ 30 min; population ≈ 6.8×10⁵ cells
Correct Answer
C
Correct Option:
Generation time ≈ 38 min; population ≈ 5.5×10⁵ cells

About This Question

This is Neco Model Questions Vol1 2019 Biology Question 26. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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