Bacteria on Earth Bacteria are in every environment imaginable!

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Presentation transcript:

Bacteria on Earth Bacteria are in every environment imaginable!

Bacterial Morphology

largest – 50 μm in diameter smallest – 0.3 μm in diameter Figure 3.3

Thiomargarita namibiensis

Gram Staining

Gram-Positive Peptidoglycan Cell Membrane Peptidoglycan Cytoplasmic membrane Another cell Gram-Negative Outer Membrane Membrane Peptidoglycan Periplasm Periplasmic space

Figure 3.4 – Effect of Pencillin

Endospore

Bacterial Reproduction

Treponema denticola

Predatory Bacteria Bdellovibrio bacteriovorus attacking Spirillum serpens (arrow).

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