Waec Model Questions Vol1 2024 Biology Question 22

Practice objective / multiple choice question 22 from the 2024 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2024 Biology Objective / Multiple Choice Hard Difficulty
Question 22 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • BIOLOGY • objective

A bacterial culture is inoculated with 5 × 10³ cells. After 3 h the population has increased to 8 × 10⁶ cells, and the culture is assumed to grow exponentially after an initial lag phase. (i) Determine the generation time of the bacterium in minutes. (ii) Using this generation time, estimate the number of cells present after 6 h of growth.

Answer Options

Correct Answer A. Generation time ≈ 17 min; cells after 6 h ≈ 1.3 × 10¹⁰
B. Generation time ≈ 20 min; cells after 6 h ≈ 8.0 × 10⁹
C. Generation time ≈ 25 min; cells after 6 h ≈ 5.0 × 10⁹
D. Generation time ≈ 15 min; cells after 6 h ≈ 2.5 × 10¹⁰
Correct Answer
A
Correct Option:
Generation time ≈ 17 min; cells after 6 h ≈ 1.3 × 10¹⁰

About This Question

This is Waec Model Questions Vol1 2024 Biology Question 22. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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