Neco 2024 Biology Question 46

Practice objective / multiple choice question 46 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Hard Difficulty
Question 46 NECO • 2024 • BIOLOGY • objective

An experiment starts with \(1.0\times10^{6}\) bacterial cells. After 4 hours the culture contains \(6.4\times10^{7}\) cells. (a) Assuming exponential growth, calculate the generation time in minutes. (b) A plasmid conferring antibiotic resistance is present in 1% of the cells initially. Each generation, the plasmid is transferred to 20% of the plasmid‑free cells. How many generations are required for at least 50% of the population to carry the plasmid?

Answer Options

A. Generation time = 50 min; generations required = 6
Correct Answer B. Generation time = 40 min; generations required = 4
C. Generation time = 45 min; generations required = 3
D. Generation time = 30 min; generations required = 5
Correct Answer
B
Correct Option:
Generation time = 40 min; generations required = 4

About This Question

This is Neco 2024 Biology Question 46. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Hard .

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