What is a microbe? Microbes are everywhere. There are more of them on a person,s hand than there are people on the entire planet Microbes are in the air we breathe, the ground we walk on, the food we eat-theyre even inside us! We couldn t digest food without them--animals couldnt, either Without microbes, plants couldn 't grow, garbage wouldn't decay and there would be a lot less oxygen to breathe In fact, without these invisible companions our planet wouldn t survive as we know it! WORLD w.microbeworld org
What is a Microbe? ▪ Microbes are everywhere. There are more of them on a person's hand than there are people on the entire planet! ▪ Microbes are in the air we breathe, the ground we walk on, the food we eat—they're even inside us! ▪ We couldn't digest food without them—animals couldn't, either. Without microbes, plants couldn't grow, garbage wouldn't decay and there would be a lot less oxygen to breathe. ▪ In fact, without these invisible companions, our planet wouldn't survive as we know it!
How small are microbes? Perspective meter Naked eye Tapeworm Sun Nematode Earth Light microsco Thiomargarita N namibiensis Bacillus cereus Staphylococcus Khalifa Pox virus Electron microscope Influenza virus 监画画 Polio virus Human
How small are microbes? 10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 1 meter Polio virus Influenza virus Pox virus Staphylococcus Plasmodium Tryptanosome Schistosome Nematode Tapeworm Naked eye Light microscope Electron microscope Bacillus cereus 1 101 102 103 104 105 106 107 108 109 meter Human Medical school Burj Khalifa Mount Everest Moon Jupiter Sun Earth Perspective Thiomargarita namibiensis
Microbes in the tree of life Phylogenetic Tree of Life Bacteria Archaea Eukaryota Green Filamentous Spirochetes bacteria Entamoebae slime/Animals Gram Methanosarcina Fungi Proteo bacter ia positives Methanobacterium Halophiles Plants Methanococcus Cyanobacteria Ciliates T celer Placomyces Thermo roteus Flagellates Pyrodicticum Bacteroides Trichomonads cytophaga MIcr ospondna Thermotoga Dip lo monads Aquifex Protista Viruses?. not considered life!
Microbes in the Tree of Life Protista Viruses?...not considered life!
Taxonomy(biological classification) Carolus Linnaeus Proposed the binomial nomenclature to standardize names for all living things Organisms are given two Latinized names Carolus linnaeus: 1707-1778 Generic name(Genus) Life Specific name(Species) Domain Kingdom Names are always in ItaliCs Phylum Genus name is capitalized, species Class name not order Family Second time use in text: genus name Genus can be initialized Species
Taxonomy (biological classification) Carolus Linnaeus ▪ Proposed the binomial nomenclature to standardize names for all living things. ▪ Organisms are given two Latinized names: ▪ Generic name (Genus) ▪ Specific name (Species) ▪ Names are always in Italics ▪ Genus name is capitalized, species name not. ▪ Second time use in text: genus name can be initialized Carolus Linnaeus: 1707 – 1778
Examples Life Domain Bacteria Eukaryota Kingdom(not used) (not used) Animalia Phylum Proteobacteria Euryarchaeota Chordata Class Gammaproteobacteria thermococci Mammalia order Enterobacteriales Thermococcales Carnivora Family Enterobacteriaceae Thermococaceae Canidae Genus Escherichia Py coccus Canis species P abyss C lupus
Examples Bacteria Archaea Eukaryota (not used) (not used) Animalia Proteobacteria Euryarchaeta Chordata Gammaproteobacteria Thermococci Mammalia Enterobacteriales Thermococcales Carnivora Enterobacteriaceae Thermococaceae Canidae Escherichia Pyrococcus Canis E. coli P. abyssi C. lupus