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14.1,2,3 bio

contains 14.1, 14.2, and 14.3

biogenesis the theory that living organisms come only from other living organisms
spontaneous generation an early and now disapproved theory that living organisms come to life spontaneously from nonliving material
radiometric dating a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope
mass number the sum of the numbers of protons and neutrons in the nucleus of an atom
radioactive isotope an isotope that has an unstable nucleus and that emits radiation
microsphere spherical in shape and are composed of many protein molecules that are organized as a membrane
isotope an atom that has the same number of protons as the other atoms of the same element do but that has a different number of neutron's
radioactive decay the disintegration of an unstable atomic nucleus into 1 or more different nuclides, accompanied by the emission of radiation, the nuclear capture or ejection of electrons, or fission
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
coacervate a mass of colloidal substances held together by electrostatic attraction
ribozyme a type of RNA that can act as an enzyme
chemosynthesis the production of carbohydrates through the use of energy from inorganic molecules instead of light
ozone a gas molecule that is made up of 3 oxygen atoms
archaea prokaryotes that are distinguished from other prokaryotes by differences in their genetics and in the makeup of their cell wall; members of the domain Archaea
cyanobacteria a bacterium that can carry out photosynthesis, such as a blue-green alga
endosymbiosis a mutually beneficial relationship in which 1 organism lives within another
Created by: ChambersA20