The Microbial World :: A look at all things small

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6-1 Introduction
6-2 Growth for microorganisms is defined as an increase in numbers
6-3 Unicellular microbes grow by cell division
6-4 Cell division is a complex process
6-5 Measurement of cell growth can be accomplished in a number of ways
6-6 Growth in batch culture has four separate phases
6-7 Lag phase is the time before cell growth begins
6-8 In exponential phase, cells begin to divide
6-9 The growth rate in exponential phase can be modeled mathematically
6-10 Cells stop increasing in number during stationary phase
6-11 Cells at some point can no longer sustain themselves and death phase begins
6-12 Continuous culture is an open system where microbes can be maintained in exponential phase
6-13 The environment greatly affects the growth of microbes
6-14 Temperature affects the rate of growth.
6-15 Microbes respond differently to the presence of oxygen.
6-16 The hydrogen ion concentration (pH) affects growth of microbes
6-17 The availability of water or concentration of solutes influences the ability of microbes to grow
6-18 Summary

The Microbial World