micro chapter one

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Last updated 10:45 PM on 2/7/26
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10 Terms

1
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when did earth form

4.6 billion years ago

2
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when did life arise on earth

3.6 billion years ago

3
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when was the start of the oxidation of the atmosphere (time ago and name of the period)

2.5 billion years ago Proterozoic era

4
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what is FeS-based metabolism used by and what is it thought to be the remnants of

archaea and early chemiosmosis

5
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when did the divergence of bacteria and archaea occur

around 3.5 bya

6
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what do the oldest fossils look like and when did they come from

bacteria, 3.5 bya

7
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what organism caused the oxidation of the atmosphere 2.5 bya

cyanobacteria

8
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what are the 3 modern domains and what divides them

bacteria, archaea, eukarya
differences in ribosomal RNA

9
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what domain do humans, yeast, and maize belong to

eukarya

10
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what is the main thing that prokaryotic cells lack that separates them from eukaryotic cells

true membrane delimited nucleus (what separates DNA from cytoplasm)

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