Nutrition & Growth Most Prokaryotes are heterotrophs; get their energy by consuming organic matter as a source of nutrition. Some are autotrophs; obtain.

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Presentation transcript:

Nutrition & Growth Most Prokaryotes are heterotrophs; get their energy by consuming organic matter as a source of nutrition. Some are autotrophs; obtain energy by making their own food. Phototrophs: from sunlight Chemotrophs: from minerals

Bacterial Reproduction Bacteria cell goal: to grow and multiply Many can double number every 20 minutes! Use binary fission to reproduce asexually, quickly Process: chromosome is replicated, then the cell divides Binary fission

Genetic Recombination Bacteria can also combine genes 3 ways: Conjugation -- Transformation (uptake of naked DNA from outside the cell) Transduction (virus inserts new genes into cell) Conjugation

Eubacterial Phyla:

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