Science deff. Ch.5 les.1-4

27 terms by jennifercardarella

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living things


basic unit of structure and function in an organism


single-celled organism


combination of chemical reactions through which an prganism builds or breaks down materials


a change in the organism's surronding


an action or a change in behavior


is the process of change that occurs during an organisms life producing more complex organsms

asexual reproduction

involes only one parent cell and produces offspring that are indntical to the parent

sexual reproduction

involes 2 parent cells and combines their genetic material to produce a new organism that differs from both parents

spontaneous generation

mistaken idea that living things can arise from non-living sources

controlled experiment

a scientist carries out a series of tests that are identical in every respest except for one factor


organisms that make their own food


organisms that cannot make their own food


the maintaince of stable unternal conditions


is the broadcast levelof organization

taxonomic keys

useful tools that help determine the identify of organisms


a unicellular organism having cells lacking a nucli


is a dense area in cell that contains nuclus acids


organisms with cells that contain nucli


recall that the process of change over time


with similar evolutionary histories are classified more clossley together

branching tree diagram

shows probable evolutionary relationship among organisms and the order in which specific charateristics may have evolved


grouping together items based on the similarities


scinentific study of how organisms are classified

binomial nomenclature

each organism was given a unique, two part sientific name


is a classification grouping that contains similar closly related organisms


a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce

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