5) When did bacteria appear on Earth?
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Last updated 12:49 AM on 7/16/25
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7 Terms
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Bacteria appears about _ billion years ago
3.5
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Prokaryotes evolved over _ billion years before Eukaryotes appeared
2.6 years
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Why does this matter?
Prokaryotes did NOT change and adapted to environmental changes
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Once eukaryotes appears, life changed from
unicellular organisms to multicellular organisms
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What 2 organelles originated from prokaryotes? (theory)
Mitochondria and chloroplasts
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What is the endosymbiotic theory?
eukaryotic organelles mitochondria and chloroplast have originated from free-living prokaryotes (2)
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List the 3 domains *
Bacteria, Archaea, and Eukarya
Note 
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