chapter1B-biology
Terms
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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
- 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