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Definitions

QuestionAnswer
biology the scientific study of life
biosphere the upper level of organization which consists of all the environments on Earth that support life (regions of land, water & the lower atmosphere)
ecosystem consists of all the organisms living in a particular area , as well as the nonliving, the physical components of the environment which the organisms interact (such as air, soil, water, & sunlight)
community the entire array of organisms inhabiting a particular ecosystem
population consists of all the individuals of a species living in a specific area
organ system consists of 7 organs that work together in performing a specific functions (such as circulatory, digestive and nervous systems)
organs a structure consisting of several tissues adapted s a group to perform specific functions (ex. Brain, spine)
tissue an integrated group of cells with a common function and structure
cell the basic unit of living matter separated from its environment by a plasma membrane; the fundamental structure unit of life
organelle membrane bound structure that performs a specific function
molecule a cluster of atoms held together by chemical bonds (DNA)
producers provide the food for a typical ecosystem (ex. plants and other photosynthetic organisms) [water+carbon dioxide = oxygen & sugar
consumers eat plants & other animals to release energy [oxygen+sugar = water & carbon dioxide
complementary interactions allow for energy and chemical nutrients to be cyc;es throughout the environment.
Prokaryotic no true nucleus (ex. bacteria)
Eukaryotic true nucleus (ex. plants & animals)
what are the 3 domains? Bacteria, archaea, Eukarya
Created by: jennahamilton
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