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13 Cards in this Set

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Protobionts
packaging membranious organisms with different internal temperature than the outside world. (Considered the origin of life)(Abioticaly produced)
life
accurate feproduction and metabolism.
liposomes
lipids and water (probionts)
RNA
first genetic material
Index fossils
fossils found in same strata but in different locations
radiometric dating
decay of radioactive isotopes used to measure the age of fossils.
half-life
the number of years for 50% of original sample to decay.
Permian extinction
the extenction of the dinosaurs and 96 percent of marine life due to either a meteor or a volcano.
serial endosymbiosis
sequence of endosymbiotic events.
gametic annealing
horizontal gene transfer between different bacterial and archean linneages.
snowball earth hypothesis
hypothesis that the earth needed heat.
Cambrian Explosion
animals appeared in the first 20 million years of Cambrian period.
Pangea
first big continent.