BIO173_153 - Week 8 - Microorganisms - Microorganisms...

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Microorganisms Bacteria and Protozoans
Taxonomy Science of classification of organisms based on hierarchy Different types: Phylogenetics Biological classification (Linnean taxonomy; most popular) Kingdom, Phylum, Class, Order, Family, Genus, Species
Biological classification Picture from Bacteria Archaea Eukarya Monera Fungi Plantae Animalia Protista
Prokaryotes vs Eukaryotes Size Membrane bound Organelles Genetic material Ribosomes Cell wall Locomotion Prokaryote 0.2-2 µm Absent (except photosynthetic membranes) - single chromosome - no histones - in cytoplasmic region ( nucleoid ) 70S amino acids and sugar flagella Eukaryote 10-100 µm Present (ER, Golgi, etc) - multiple chromosomes - histones - in membrane region ( nucleus ) 90S sugar (cellulose) flagella and cilia
Bacteria Bacteria , Archea (Monera) Picture from
Bacteria Most common form of living organism on earth . In fact … … when I look at you I see bacteria ! Your body

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