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The bacterial growth curve represents the number of live cells in a bacterial population over a period of time. There are four distinct phases of the growth curve: lag, exponential (log), stationary, and death. The initial phase is the lag phase where bacteria are metabolically active but not dividing.
Considering this, what is the life cycle of a bacteria?
The bacteria life cycle consists of the lag phase, the log or exponential phase, the stationary phase and the death phase. Factors that influence bacterial growth bear heavily on this cycle.
People also ask, what happens during the death phase of bacterial growth?
Log phase: the number of bacterial cells doubles at a constant, exponential rate. Stationary phase: population growth levels off as the rate of cell death equals the rate of cell division. Death phase: a decline in population numbers due to starvation and/or high toxin concentrations.
Terms in this set (6)
- Reservoir. Environment where most microbes grow.
- Food. Water and nourishment.
- Oxygen. Most need oxygen to survive.
- Darkness. Warm and dark environments is needed.
- Temperature. Most grow best at body temperature.
- Moisture. Grow well in moist places.