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14 Cards in this Set

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autotroph
An organism that makes its own food.
homeostasis
The maintenance of stable internal conditions despite changes in the surroundings.
heterotroph
An organism that cannot make its own food.
response
An action or change in behavior that occurs as a result of stimulus.
stimulus
A change in an organism's surroundings that causes the organism to react.
organisms
A living thing.
cell
The basic unit of structure and function in an organism.
spontaneous generation
A mistaken idea that living things arise from nonliving sources.
development
The process of change that occurs during an organism's life to produce a more complex organism.
unicellular
A type of organism that is made up of a single cell.
multicellular
A type of organism that is made up of many cells.
controlled experiment
An experiment in which all factors are identical except one.
manipulated variable
The one factor that a scientist changes during an experiment.
reproduce
The production of offspring that are similar to the parents.