Lab 3 outline

Lab 3 outline - Lab 3 Single-celled Organisms Taxonomy...

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Lab 3 Single-celled Organisms Taxonomy Domain Kingdom Phylum (animal) or Division (plant) Class Order Family Genus Species Three Domains Bacteria o Most familiar prokaryotes including most disease-producing bacteria, blue- green bacteria, and benign bacteria living symbiotic relationships with plants and animals Archaea o Prokaryotes that survive in extreme conditions Eukarya o All organisms with membrane bound organelles and nucleus Kingdoms (examples) • Archaebacteria • Eubacteria • Fungi • Plantae • Animalia Domain Bacteria- Most widespread and abundant organisms on earth Bacteria Characteristics Prokaryotes - No true nucleus - No membrane-bound organelles Unicellular Aerobic – require oxygen Anaerobic – cannot tolerate atmospheric oxygen Facultative anaerobes - prefer atmospheric oxygen but can survive without it Heterotrophs Break down complex organic compounds gleaned from the environment Fermentation or cellular respiration Autotrophs Fix carbon dioxide to make their own food Photoautotrophic: fueled by light energy Chemoautotrophic: oxidation of nitrogen, sulfur, or other elements
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Bacteria Morphology Coccus Spirillum Bacillus Colony Morphology-see picture on page 48 in lab manual Nitrogen Fixers Need N to make proteins & n.a.’s Eukaryotes can’t use N
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Lab 3 outline - Lab 3 Single-celled Organisms Taxonomy...

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