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Heather Buch

on 14 September 2011

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Transcript of Bacteria

Bacteria Energy Acquisition Cell Type and Structures Cell/Organism Size Microscopic, single-celled organisms Resources www.biologyreference.com/EP-FI/Eubacteria.html
accessed September 9, 2011.

accessed September 9, 2011. Prokaryotic - no nuclei Cells are 1 - 10 micrometers Reproduction and Life Cycle Organism Examples Asexual Reproduction Binary fission Spores Budding Lactobacillus acidophilus Nitrogen Fixing Bacteria Stomach Bacteria Staphylococcus aureus Bacillus anthrax Clostridium tetani Streptococcus pyogenes strep throat tetanus staph infection anthrax disease lactic acid bacilli: rod-shaped cocci: spherical spirilla: curved walls (corkscrew) http://cdn.physorg.com/newman/gfx/news/2008/streptococcu.jpg http://img.medscape.com/article/705/512/705512-fig6.jpg http://textbookofbacteriology.net/B.anthracis1.jpeg http://www.thebioenergysite.com/articles/contents/bacteria.jpg http://www.vitalsigns-health.co.uk/Images/h_pylori.jpg http://cafescicolorado.org/images/Staph.jpg http://diverge.hunter.cuny.edu/~weigang/Images/11-14_ctetani.jpg Pictures from: http://www.ou.edu/class/pheidole/General%20Bacteria.jpg Lack organelles surrounded by membranes Biology: Dimensions of Life. Presson have rigid cell wall made of peptidoglycan bacterial conjugation: swap genes

bacterial transformation: prokaryotes die and release their DNA nearby and living prokaryotes take it up and add to their own genomes most DNA in one, large circular chromosome flagella Genetic diversity www.ucmp.berkeley.edu/bacteria/bacteria.html

//users.rcn.com/jkimball.ma.ultraet/BiologyPages/E/Eubacteria.html Photoautotrophs - obtain energy in the form of light Chemoautotrophs - oxidizing chemical compounds Can be Autotrophs and Heterotrophs Autotrophs: Lag Phase Exponential Phase Stationary Phase Death Death Phase www.ehow.com A few kinds of bacteria have brief multicellular phases in their life cycles. Ex: myxobacteria
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