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Chapter 14

Mandatory Terms

TermDefinition
Spontaneous Generation An early and now disproved theory that living organisms come to life spontaneously from nonliving material
Biogenesis The scientific principle that living organisms come only from other living organisms
Half-life The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope
Endosymbiosis A mutually beneficial relationship in which one organism lives within another; a theory that eukaryotic cells originated through endosymbiotic relationships between ancient prokaryotic cells
Microsphere A microscopic spherical structure composed of many protein
Coacervate A mass of droplets of colloidal substances, such as lipids, amino acids, and sugars, that are held together by electrostatic attraction
Radioactive Decay The disintergration of an unstable atomic nuclues into one or more different nuclides, accompanied by the emission of radiation, the nuclear capture or ejection of electrons, or fission
Created by: GutzwillerL19
 

 



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