Bacterial Physiology and genetics

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Microbial Growth - refers to the number of cells ,[object Object],[object Object],[object Object]

Nutritional Requirements Physical Requirements Autotrophs Heterotrophs Organic and Inorganic substances

Physical Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

pH ,[object Object],[object Object],[object Object]

3. Facultative Aerobes Facultative Anaerobes

Oxygen is lethal to some organisms ,[object Object],[object Object],[object Object]

Superoxide dismutase ,[object Object],[object Object]

Catalase ,[object Object],[object Object],[object Object],[object Object]

Phases of Growth ,[object Object],[object Object],[object Object],[object Object],[object Object]

1. Lag Phase ,[object Object],[object Object],[object Object],[object Object]

2. Log Phase ,[object Object],[object Object],[object Object],[object Object]

3. Stationary Phase ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Endospores would form now

4. Death Phase ,[object Object],[object Object]

Bacterial Growth - increase in the # of cells ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Binary Fission - unchecked ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Limiting factors in the environment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bacterial Genetics ,[object Object],[object Object]

Double helical structure of DNA Replication

Important enzymes involved in Replication: ,[object Object],[object Object],[object Object]

Genetic Information In Bacteria Carries properties like virulence, pathogenicity & resistance Extrachromosomal genetic material in the cytoplasm Replicate independently Virus infecting bacteria Chromosome Plasmid Bacteriophage

PLASMIDS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mechanisms Of Genetic Variations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

1. Base substitution ,[object Object],[object Object],[object Object]

2. Frame Shift Mutation ,[object Object]

Gene Transfer in bacteria: ,[object Object],[object Object],[object Object],[object Object]

4- Tranposition. ,[object Object]

Bacterial Physiology and genetics

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