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Acton BiologyMr. LeBlanc SBI 3U Diversity of Living Things
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Growth increase in size enlargement of a single cell or mitotic division towards the forming of a multi- cellular organism leads to a series of changes that allows an organism to reach its final form (development)
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Reproduction only life can produce life (like produces like) organisms must reproduce because they have a limited life span methods include asexual and/or sexual reproduction
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Irritability response to stimuli or changes in the environment allows for survival
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Maintenance and Repair energy is needed to repair damaged and/or worn out parts
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Metabolism is the exchange of matter and energy between an organism and its environment and the changes that occur in this matter and energy when they are in the organism
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Originally developed by Carl Linnaeus (18 th century) His system was based on physical features and structures Why?
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Two-part Latin naming system First part is the genus Second part is the species Ex. For Homo sapiens (the name for humans), Homo is the genus and sapiens is the species A species is a group of organisms that can breed and produce fertile offspring under normal conditions ▪ Example and non-example?
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Taxonomy is the modern classification system for organisms The levels of classification are called taxa A single taxonomic level is called a taxon
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Species Genus Family Order Class Phylum Kingdom KPCOFGSKPCOFGS KPCOFGSKPCOFGS Least number of taxonomic groups Greatest number of organisms per taxon Greatest number of taxonomic groups One organism per taxon
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Eubacteria – “True” bacteria Archaebacteria – “Ancient” bacteria Protista – Eukaryotic microorganisms Fungi – Yeasts, molds and mushrooms Plantae – Plants Animalia - Animals
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Unicellular Prokaryotic Heterotrophic or autotrophic Asexual reproduction Cell wall (peptidoglycan) Ex. algae
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Procholorococcus – an autotrophic bacterium Bundren, 200813
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Unicellular Prokaryotic Heterotrophic Cell wall (no peptidoglycan)
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Reproduction – asexual Cell Wall – cell walls without peptidoglycan Habitat – live in extreme habitats such as hot springs, geysers, volcanic hot pools, brine pools, black smokers Bundren, 200815
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Morning Glory Pool in Yellowstone National Park – note the bright colors from the archaebacteria growing in the extremely hot water. Bundren, 200816
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Bundren, 200817
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Archaebacteria can live deep in the ocean near geothermal vents called black smokers There is no light, so they carry out chemosynthesis instead of photosynthesis Bundren, 200818
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Single celled or multicellular Prokaryotic or eukaryotic Autotrophic, heterotrophic or both Sexual or asexual reproduction Cell wall
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Volvox – a colonial protist Euglena - autotrophic A slime moldAmoeba - heterotrophic Bundren, 200820
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Most are multicellular Heterotrophic Sexual and asexual reproduction Cell wall made of chitin
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Stilton cheese Bread mold Bundren, 200822
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Multicellular Autotrophic Sexual and asexual reproduction Cell wall made of cellulose
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Bundren, 200824
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Multicellular Heterotrophic Sexual reproduction (most) No cell wall
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Coral snake Sponge Flatworm Octopus Jellyfish Bear Bundren, 200826
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