5) When did bacteria appear on Earth?

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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

2.6 years before Eukaryotes appeared

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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?

some of the organelles in the eukaryotic cells, such as mitochondria and chloroplast, have originated from free-living prokaryotes (bacteria and archaea).

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List the 3 domains *

Bacteria, Archaea, and Eukarya