Growth of Microbes - Growth of Microbes Increases in number not in size One cell becomes colony of million of cells Chemical Requirements#1-WATER

Growth of Microbes - Growth of Microbes Increases in number...

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Growth of Microbes Increases in number not in size One cell becomes colony of million of cells Chemical Requirements #1--WATER Elements Carbon (50%0 of a dry cell weight) HONPS Trace Elements Organic Source of energy (glucose) Vitimas (comenzyms) Some amino acids, purines and pyrimidines Environmental Factors Temperature O2 pH Osmotic pressure Radiation ****Every bacteria has a minimum, optimal, and maximum temperatures**** Obligate aerobes-require o2 Facultative anaerobes-can use o2 but can grow without Obligate anaerobes-die in the presence of o2 PH Most grow between pH 6.5 and 7.5 Acidophiles can live at low pH Bacterial Division Divides by binary fission Others can be budding, conidiospores, fragmentation Bacteria does not have a nuclear membrane Generation Time Time required for cells to divide or for population to double Average for bacteria 1-3 hours
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  • Winter '15
  • Egner
  • Bacteria, Bacterial growth, Obligate aerobes-require o2, Phase- Exponential growth

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