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19 Cards in this Set
- Front
- Back
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organism
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a living thing
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cell
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the basic unit of structure and function in living things
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unicellular
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made of a single cell
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multicellular
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consisting of many cells
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stimulus
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a change in an organism's surroundings that causes the organism to react
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response
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an action or change in behavior that occurs in reaction to a stimulus
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development
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the process of change that occurs during an organism's life to produce a more complex organism
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spontaneous generation
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the mistaken idea that living things arise from nonliving sources
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autotroph
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an organism that makes its own food
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heterotroph
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an organism that cannot make its own food
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homeostasis
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the maintenance of stable internal conditions in an organism
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classification
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the process of grouping things based on their similarities
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taxonomy
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the scientific study of how living things are classified
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binomial nomenclature
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the system for naming organisms in which each organism is given a unique, two-part scientific name
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genus
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a classification grouping that consists of a number of similar, closely related species
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species
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a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
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prokaryote
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an organism whose cells lack a nucleus and some other cell structures
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nucleus
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the control center of a eukaryotic cell that directs the cell's activities and contains the information that determines the cell's form and function
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eukaryote
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an organism whose cells contain nuclei
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