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17 Cards in this Set

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biology
scientific study of life
domain Archaea
contains prokaryotic cells that often live in extreme habitats, have unique genetics, biochemical $ physiological characteristics
evolution
descent of organisms from common ancestors
biosphere
the zone of air, land, and water @ the surface of the earth where living organisms are found
populations
individual organisms; all the members of a species with in a particular area
community
assemblage of pops. interacting with one another with in the same envirnoment
ecosystem
biological community together with the associated abiotic environment. Characterized by "flow of energy & a cycling of inorganic nutrients
biodiversity
the total # of species, the variablility of their genes & the ecosystems in which they live
extinction
the death of species/ larger taxanomic group
muliticellur organism
Organism composed of many cells; usually jas organized tissues, organs & organ system
energy
Capacity to do work & bring about change; occurs in a variety of forms.
metabolism
All the chemical reactions that occur in a cell during growth & repair
photosynthesis
Process occurring usually w/in chloroplasts whereby chlorophyll containing organelles trap solar energy to reduce carbon dioxide to carbohydrate
homeotasis
the maintaince of internal conditions w/in certain bounderies
reproduce
make another organism like itself
genes
contains specific info for how the organism is to be ordered are made of long molecules of DNA
Adaptations
modifications that make organism suited to their way of life