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Bio Vocab

Fossils, endoymbiosis, stuff like that

TermDefinition
Fossil preserved from a past geologic age
Relative dating the arrangement of artifacts or events in a sequence relative to one another but without ties calendrically measured time; the arrangement of artifacts in a typological sequence or seriation
Radiometric dating any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.
Isotope any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights.
Half-life the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
Index fossil a widely distributed fossil, of narrow range in time, regarded as characteristic of a given geological formation, used especially in determining the age of related formations.
Era is a time of time marked by character, events, changes on earth, etc. Usually a mass extinction occurs. (Ex: The Ice Age, Dinosaurs, etc.)
Period a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics
Epoch a particular period of time marked by distinctive features, events, etc.
Ribozymes are RNA molecules that are capable of catalyzing specific biochemical reactions, similar to the action of protein enzymes.
Cyanobacteria is a phylum of bacteria that obtain their energy through photosynthesis
Endosymbiosis symbiosis in which one symbiont lives within the body of the other.
Cambrian explosion The rapid diversification of multicellular animal life that took place around the beginning of the Cambrian Period. It resulted in the appearance of almost all modern animal phyla.
Created by: omg_its_bri