Archaea

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  • Archaea
    • very different from bacteria, more similar to eukaryotes
      • ARCHAEA- cell wall peptidoglycan, lipids are ether-linked/have branched carbon chains, rRNA sequences and RNA polymerase are similar to eukaryotes, sensitivity to antibiotics is not inhibited
        • can live in extreme environments
      • BACTERIA- cell wall has peptidoglygan, rRNA sequences are unique, RNA polymerase are small and simple, sensitive to antibiotics is inhibited, membrane lipids are ether linked or have unbranched carbon chains
    • Phylum Crenarchaeota- Thermoacido-philes
      • Metobolize sulfur, contain enzymes that function at high temperatu-re
    • Phylum Euryachaeota-Methanogens and Halophiles
      • Methanogens-> cannot use carbohydr-ates, lipids or proteins as energy sources, oxidize H2 with CO2 and produce methane, poisoned by O2, live in our guts
    • Live in extreme environments-extremophile
    • Untitled
    • Live in saline environments (high concentration of salt)- halophiles
    • live in very hot places (70'C-80'C)- hyperthermo-philes
  • Metobolize sulfur, contain enzymes that function at high temperatu-re

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