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science ch.1


organism A living thing.
cell The basic unit of a structure and function in an organism.
unicellular Made of a single cell.
multicellular made of many cells
stimulus A change in an organism's surroundings that causes the organism to react.
response An action or change in behavior that occurs as a result of a sitimulus.
development The process of change that occurs during an organism's life to porduce a more complex organsim.
spontaneous generation The mistaken idea that living things arise from nonliving sources.
controlled experiment An experiment in which all factors are indentical excpet one.
autotroph An organism that makes its own food.
heterotroph An organism that cannot makes its own food.
homeostasis The maintenance of stable internal condiciones.
classification The process of grouping things based on their similarities.
taxonomy The scientfic study of how living things are classified
binomial nomenclature The system for naming organisms in which each organisms is given a unique, two-part scientific name indicating its genus and species
genus A classification grouping that consists of a number of similar, closely related species
species A group of of similar organism that can mate with each other and produce offspring that can also mate and reporduce
evolution The process by which species gradually change over time
prokaryote An organism whose cells lack nucleus and some other cell structures
nucleus The dense area in a eukaryote cell that contains nucleic acids, the chemical instructtions that direct the cell's activities
eukaryote An organism whose cells contain nuclei
Created by: aleeza9695