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Growth and Cell Division

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Presentation on theme: "Growth and Cell Division"— Presentation transcript:

1 Growth and Cell Division
Binary fission No mitosis Multiple chromosomes Budding Yeasts and some bacteria Unequal partitioning of cytoplasm

2 Bacterial Growth Curve
Lag phase Log phase Stationary phase Death phase

3 Physical Factors Affecting Bacterial Growth
Temperature Psychrophiles Psychrotrophs Mesophiles Thermophiles Extreme thermophiles

4 Physical Factors Affecting Bacterial Growth - Oxygen
Obligate aerobe Obligate anaerobe Microaerophile Facultative anaerobe Aerotolerant anaerobe

5 Physical Factors Affecting Bacterial Growth
Hydrostatic pressure Osmotic pressure Radiation

6 Nutritional Factors Affecting Bacterial Growth
Carbon source Nitrogen source Sulfur/ phosphorus Trace elements Vitamins Nutritional complexity

7 Culturing Bacteria - Streak Plates
Streak plate method

8 Culturing Bacteria - Pour Plates
Pour plate method

9 Culture Media Purposes Selective media Differential media
Enrichment media Propagation media Types Defined Complex


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