Prokaryotic Growth Flashcards
How much DNA does a prokaryote have?
One loop
What is a prokaryote?
a single-celled organism
What is special about a prokaryote cell?
there is no nucleus or organelles
How do prokaryotes replicate?
Binary fission
What is the three-step process of binary fission?
DNA Replication -> Cell Elongation -> Cell Devision
How does bacterial growth increase?
Logarithmically
What happens in the Lag Phase?
Cells are alive but not doubling?
What happens in the exponential phase?
Cells are dividing at a constant rate.
What does cell growth rate depend on? (3)
Species, medium and environmental factors.
How long does it take to replicate DNA?
40 Minutes
What happens in the stationary phase?
The population stops doubling (environmental changes)
What happens in the death phase?
The population decreases (environment is killing the cells)
How do we measure growth?
Turbidity
What are the 4 phases of bacterial growth?
Lag phase, exponential phase, stationary phase and death phase.
Can environments be too harsh for cell growth?
No
