Microbial Growth and Reproduction
Biology ⇒ Microorganisms and Microbiology
Microbial Growth and Reproduction starts at 9 and continues till grade 12.
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See sample questions for grade 11
A bacterial culture starts with 1,000 cells. If the generation time is 30 minutes, how many cells will there be after 2 hours?
A culture of E. coli has a generation time of 20 minutes. If you start with 500 cells, how many cells will there be after 1 hour?
A scientist observes that a bacterial culture stops growing after several hours, even though nutrients are still present. Suggest one possible reason for this observation.
Describe one way in which microbial growth can be controlled in food preservation.
Describe the four phases of the bacterial growth curve.
Explain the difference between batch culture and continuous culture in microbial growth.
Explain the importance of the stationary phase in the bacterial growth curve for industrial fermentation processes.
Explain why microbial growth is often measured by turbidity in a liquid culture.
Explain why the log phase is also called the exponential phase in microbial growth.
Name one method by which fungi reproduce asexually.
Name two factors that can limit microbial growth in a natural environment.
What is the main advantage of endospore formation in bacteria?
What is the main difference between aerobic and anaerobic microbial growth?
What is the main difference between budding and binary fission?
What is the role of plasmids in bacterial reproduction and genetic variation?
Which phase of the bacterial growth curve is characterized by a balance between cell division and cell death?
