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6 Kingdoms Anticipation Guide: Just to get you thinking! . T/F All bacteria are harmful! T/F Only animals move. T/F All animals are vertebrates. T/F Humans are not animals. T/F Mushrooms are plants. T/F Viruses are living cells. Section 17.3 - Domains and Kingdoms.
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6 Kingdoms Anticipation Guide:Just to get you thinking! T/F All bacteria are harmful! T/F Only animals move. T/F All animals are vertebrates. T/F Humans are not animals. T/F Mushrooms are plants. T/F Viruses are living cells.
Section 17.3 - Domains and Kingdoms • Today’s biological classification system has six kingdoms within three domains. The three domains are: • Archaea • Eubacteria (Bacteria) • Eukarya (Eukaryota) • Organisms are classified into domains according to cell type and structure.
Domains and Kingdoms (cont.) • Within the domains are six kingdoms: • Archaea (or Archaebacteria) • Eubacteria • Protists • Fungi • Plantae • Animalia • Organisms are arranged into kingdoms based on cell type, structure, and nutrition.
(BACTERIA) (BACTERIA)
Domain Archaea • Kingdom Archaea or Archaebacteria • Prokaryotes that reproduce asexually • More ancient than bacteria • No peptidoglycan in cell walls • Diverse in nutrition requirements • Most are heterotrophic • Some are autotrophic • Called extremophiles because they live in extreme environments • Boiling hot springs, salty lakes,thermal vents on ocean floor, mud of marshes where there is no oxygen • So may or may not need oxygen to live
Archaea (Extremophiles) http://www.nsf.gov/news/special_reports/sfs/images/life_ext.jpg
Domain Eubacteria (Bacteria) • Kingdom Eubacteria – prokaryotes whose cell wall contains peptidoglycan – a strong polymer of two alternating sugars • A diverse group that can survive in many different environments and that reproduce asexually. • All are unicellular • Some are: • Aerobic (require oxygen) OR • Anaerobic (die in presence of oxygen) • And they are either • Autotrophic (produce their own food) OR • Heterotrophic (get their food from other organisms)
Eubacteria (Peptidoglycan)
Eubacteria Streptococcus pyogenes Escheria coli http://lenta.ru/news/2005/09/30/bacteria/ http://www.microscopyconsulting.com
Domain Eukarya • Eukaryotes • Contains the following Kingdoms: • Protista • Fungi • Plantae • Animalia
Kingdom Protista • Domain Eukarya • Eukaryote • Unicellular & Multicellular • Autotrophic & Heterotrophic • Require oxygen (aerobic) • Reproduce sexually or asexually or both • Plant-like – may or may not have cell walls
Kingdom Protista Euglena Amoeba proteus Giant Sea Kelp http://www.utsc.utoronto.ca/~olaveson/Euglena.html, by Mary Olavsen http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20lectures/Protists/protists.htm Paramecium caudatum Slime Mold http://www.eco-pros.com/giant.htm www.genome.gov www.pantransit.reptiles.org
Major Groups of Protista: Fungus-like Animal-like Plant-like
Kingdom Fungi • Domain Eukarya • Eukaryotes • Cell wall, chitin • Unicellular or Multicellular • Heterotrophic • Aerobic • Reproduce sexually, asexually or both
Kingdom Fungi Penicillium notatum Shelf Fungus Yeasts http://www.consilia-sa.ch/Francais/Analytes_A-Z/Allergenes/f_allerg.htm http://www.ucmp.berkeley.edu/fungi/fungi.html www.sbs.utexas.edu
Major Groups Major Groups of Fungi
Blue-green “algae” or cyanobacteria Chemoautotrophs Spirillus (spiral-shaped) Bacillus (rod-shaped) Coccus (spherical-shaped) Major Groups
Kingdom Plantae • Domain Eukarya • Eukaryotes • Cell wall made of cellulose • Multicellular • Autotrophic (all do photosynthesis) • Oxygen required • Reproduce sexually, asexually or both.
Plant Diversity Major Groups Bryophytes (non-vascular) Pterophytes (seedless, vascular) Coniferophytes (naked seed, vascular & cone-bearing) Anthophytes (covered seed, vascular & flowering)
Kingdom Animalia • Domain Eukarya • Eukaryotes • No cell wall • Multicellular • All are heterotrophic • Digestion takes place inside the body. • All require oxygen • Reproduce sexually, asexually or both.
Major Groups of Animals Amphibians Reptiles Birds Mammals Sponges Worms Insects Fish
What About Viruses? Why don’t we classify them?
Viruses are Non-living! • Viruses are nonliving strands of genetic material within a protein coat. • Not classified into a domain as they are not considered to be living due to the following: • 1. don’t exhibit all 8 characteristics of life • 2. no organelles to take in nutrients or use energy • 3. can’t make proteins • 4. can’t move • 5. can’t replicate on their own – require a host to do so
Viruses (cont.) • Origin: Viruses may have evolved from parts of cells. • Structure: • Capsid = outer layer made up of proteins. • Inside capsid is genetic material which is either • DNA OR • RNA, BUT NEVER BOTH! • Types: Classified by the type of nucleic acids they contain. • DNA Virus, example = smallpox • RNA Virus called a RETROVIRUS = HIV
Bacteriophage: CAPSID This type of virus infects bacterial cells.