Term
| evolution of complex structures |
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Definition
1. gradual improvement
2. exaptation |
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Term
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Definition
converting older adaptions to new uses
ex. old genes gaining new jobs
-antifreeze gene |
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Term
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Definition
1. accumulation of organic compounds, self synthesizing molecules
2.RNA- based genetic, metabolic systems, dominated by replicating ribozymes
3. enclosure in lipid bilayer, protobionts
4. evolution of controlled reproduction, first cells |
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Term
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Definition
anaerobic, chemoautotrophic prokaryotes.
-left stromatolites |
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Term
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Definition
-anabolism increases
ex. cyclic ps- noncyclic ps- oxygenic ps
- advances in catabolism
ex. fermentation- anaerobic respiration |
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Term
| 4. first known eukaryotic cells |
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Definition
1. formation of nucleus and endomembrane system
2. shape changes to engulf other cells for food
3.form mutually beneficial relationship ancestral mitochondria and chloroplasts |
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Term
| 5. multicellular eukaryotes appear |
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Definition
1. algae simple= can be engulfed
- led to 2nd big increased in O2 levels
- global ice age as CO2 dropped
2. jellyfish and other soft bodied animals
- more active requires more O2 |
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