Classification of Organisms

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Kingdom Schemes
Viruses and Bacteria

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  • Similarities and differences of the birds? How will you classify them? Why do we need to classify?
  • Classification of Organisms

    1. 1. Gr. 9 Science Wordlab School, Inc. IsabelV. Neri Classification Systems
    2. 2. Carolus Linnaeus 1707 - 1778 Swedish botanist Formed a uniform system in classifying organisms
    3. 3. Key Terms Taxonomy Discipline of classifying organisms and assigning each organism a universally accepted name Binomial Nomenclature Scientific name First word – capital letter; second word – lower case Homo sapiens Taxon Group or level of organization
    4. 4. Example of classifications Mnemonics Humans Bear Kingdom Animalia Animalia Phylum Chordata Chordata Class Mammalia Mammalia Order Primata Carnivora Family Hominidae Ursidae Genus Homo Ursus Species Sapiens arctos
    5. 5. Kingdom of Organisms 2 Kingdom System Proposed by Aristotle Plants and Animals 3 Kingdom System Proposed by Haeckel Plants, Animals, Protists
    6. 6. 4 Kingdom System Copeland Plants, Animals, Protists, Monera 5 Kingdom System Whittaker Plants, Animals, Protists, Monera, Fungi
    7. 7. Domain Eukarya Domain Eubacteria Domain Archaeabacteria Archezoa Eubacteria Archaeabacteria Protista Prochromista Plantae Fungi Animalia 8 Kingdom System
    8. 8. Viruses Parasites that enter the cell Reproduce only in a host cell Composed of nucleic acids and a protein coat Can be seen only with an electron microscope Acellular
    9. 9. Shapes Round Cube / brick Needle – like rod * Shapes play a role in the infection process
    10. 10. Viral infections
    11. 11. Bacteria Prokaryotic cell Lacks membrane bound organelles Reproduce through binary fission
    12. 12. Kingdom Archaea Archaeabacteria – found in extreme environments Extremophiles – microorganisms that can survive extreme environments on Earth
    13. 13. Sulfolobus acidocaldarius
    14. 14. Kingdom Eubacteria Eubacteria – common bacterial cells Cyanobacteria Found in aquatic environments Photosynthetic Thick cell walls; no flagella Arthrospira platensis
    15. 15. Spirochaete Helically coiled bacterial cells With flagellum Treponema pallidum
    16. 16.  Proteobacteria  Anaerobic organisms  Flagella Eschirichia coli

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