Microbial Growth - Microbial Growth Chapter 6 Principles of...

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Microbial Growth Chapter 6
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Principles of bacterial growth 1. Definition: Bacterial Growth is defined as an increase in cell number leading to an increase in the size of a population. 2. Process: Bacteria generally multiply by the process of Binary Fission
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Figure 6.12a Binary Fission
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Generation Time 1. The time it takes for a bacterial cell to double in number is Generation Time. Generation time = Doubling time 2. The environmental and Nutritional factors affect the Generation Time.
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Bacterial Growth in Laboratory Closed/Batch System Growth Curve
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Phases of Growth
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Nutritional Factors 1. Major Required Elements: C, H, O, N, P, S 2. Trace Elements: Co, Zn, Cu, Mo 3. Growth Factors Fastidious organisms Vitamins, amino acids
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Energy Sources Sunlight Organic chemical compounds Inorganic chemical compounds
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Nutritional Diversity 1. Photoautotrophs 2. Photoheterotrophs 3. Chemoautotrophs / chemolithotrophs 4. Chemoheterotrophs / chemoorganotrophs
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Microbial Growth - Microbial Growth Chapter 6 Principles of...

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