Neco Model Questions Vol1 2022 Biology Question 18

Practice objective / multiple choice question 18 from the 2022 Neco Model Questions Vol1 Biology examination.

Neco Model Questions Vol1 2022 Biology Objective / Multiple Choice Hard Difficulty
Question 18 NECO_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • objective

A bacterial culture is incubated at 30°C. At the optimal temperature of 37°C the bacterium has a generation time of 20 minutes. When the temperature is lowered to 30°C the generation time increases by 50%. Starting with 10³ cells, how many cells will be present after 5 hours at 30°C? Also, determine how many cells would be present after the same period at 37°C and state the factor by which the 37°C culture exceeds the 30°C culture.

Answer Options

Correct Answer A. 30°C: 1.024×10⁶ cells; 37°C: 3.277×10⁷ cells; factor ≈ 32
B. 30°C: 8.00×10⁵ cells; 37°C: 2.90×10⁷ cells; factor ≈ 36
C. 30°C: 1.5×10⁶ cells; 37°C: 3.0×10⁷ cells; factor ≈ 20
D. 30°C: 9.5×10⁵ cells; 37°C: 2.5×10⁷ cells; factor ≈ 26
Correct Answer
A
Correct Option:
30°C: 1.024×10⁶ cells; 37°C: 3.277×10⁷ cells; factor ≈ 32

About This Question

This is Neco Model Questions Vol1 2022 Biology Question 18. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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