Waec Model Questions Vol1 2022 Biology Question 1
Practice objective / multiple choice question 1 from the 2022 Waec Model Questions Vol1 Biology examination.
A culture of *Bacillus subtilis* is inoculated with 10³ cells in a nutrient broth at 30 °C. Under optimal conditions its generation time is 20 min. At 37 °C the generation time increases by 15 % because of heat stress. The culture is incubated for 4 h at 30 °C and then the temperature is shifted to 37 °C for the remaining time. How many cells are present after a total incubation of 8 h?
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This is Waec Model Questions Vol1 2022 Biology Question 1. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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