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 10
A bacterial culture starts with 100 cells. If the generation time is 30 minutes, how many cells will there be after 2 hours?
A culture of bacteria is in the log phase. If the number of cells is 500 and the generation time is 20 minutes, how many cells will there be after 1 hour?
A scientist observes that a bacterial culture stops growing after several hours, even though some nutrients remain. Suggest one possible reason for this observation.
Describe one way in which bacteria can exchange genetic material without reproducing.
Describe the four main phases of the bacterial growth curve.
Explain the difference between lag phase and log phase in microbial growth.
Explain why bacteria do not continue to grow exponentially forever in a closed system.
Explain why temperature affects the rate of microbial growth.
Name two factors that can limit microbial growth in a laboratory culture.
What is the main advantage of spore formation in bacteria and fungi?
Which phase of the bacterial growth curve is characterized by a balance between cell division and cell death?
