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Bacteria PowerPoint Presentation

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About This Presentation

Slide 1 - Bacteria Our invisible friends
Slide 2 - Bacteria are prokaryotes Pro – before Karyon – nucleus The simplest forms of life are prokaryotes. Earth’s first cells were prokaryotes.
Slide 3 - Lots of Them! Prokaryotes are Earth’s most abundant life forms. They can survive in many environments. They can get energy from many different sources.
Slide 4 - Prokaryote Review Mostly single-celled No nucleus or organelles Circular chromosomes Cell walls Reproduce mostly asexually Anaerobic or aerobic Heterotrophic or autotrophic
Slide 5 - Archaebacteria Methane producers – anaerobic Halophiles Halo = salt Philia = love Thermophiles Thermo = heat
Slide 6 - Eubacteria Parasitic heterotrophs (Streptococcus) Saprophages Sapro = death Phage = eat Cyanobacteria (blue-green algae) Photosynthetic Chemosynthetic autotrophs (Rhizobium)
Slide 7 - Bacteria are Named by Shape Cocci (ball-shaped) Streptococcus mutans Bacillus (rod-shaped) Clostridium botulinum Spirilli (spiral-shaped) Treponema palladium
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Slide 9 - Germ Theory of Disease Joseph Lister – Aseptic Techniques Robert Koch – Germ Theory A specific microorganism causes a specific disease
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