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Science-Ch 1 What is life?

organismsthe name of living things
cellbasic unit of structure in an organism
unicellulara single celled organism
multicellularan organism made of many cells
stimulusa change in an organisms surroundings that makes an organism react
responsethe reaction to a stimulus-change in behavior
developmentthe process of becoming more complex
growththe process of becoming larger
reproductionability to produce offspring
spontaneous generationidea that living things can arise from nonliving things
controlled experimentan experiment with 2 tests identical except for 1 factor
manipulated variablethe factor that a scientist changes in an experiment
autotrophsorganisms that make their own food
heterotrophsobtain their energy by feeding on others
waterneeded by all living things to survive
homeostasismaintain stable intermal conditions
classificationthe process of grouping things according to their similarities
taxonomythe study of how living things are classified
Carolus Linneaeusdevised a system of naming organisms base on features
binomial nomenclatureLinnaeus naming system-two names
genusthe first word of a scientific name
Speciesa group of similar organisms that can mate and reproduce
Darwindeveloped a theory about how species change over time.
evolutionthe process by which species gradually change over time
prokaryotesorganisms whose cells lack a nucleus-bacteria
nucleusa dense area in a cell that directs the cells activities
archaeafound in extreme environments
eukaruyaorganisms whose cells have a nucleus-protists, fungi, plants, animals
protistsNot animal, plant or fungus-odds and ends
Fungimushrooms, mold and mildew
plantsmulticellular autotrophs (make their own food)
animalsmulticellular heterotrophs (Locate food and eat)

Spanish Teacher
Scott Middle School

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