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Chapter 1 lesson 1

What is life

organism a living thing
cell the basic unit of structure and function in an organism
unicellular a single celled organism
multicellular an organism composed of many cells
metabolism the combination of chemical reactions that an organism uses to break down materials
stimulus a change that causes an organism to react
response an organism's change in behavior do to a stimulus
development the change that happens over a lifetime, producing a more complex organism
asexual reproduction involves only one parent that produces offspring identical to the parent
sexual reproduction involves two parents and produces offspring that differs from both
spontaneous generation the mistaken idea that living things can arise from non-living sources
controlled experiment a series of tests where only one variable is changed
autotroph organisms that make their own food
hetertroph organisms that cannot make their own food
homeostasis the maintenance of stable internal conditions
Created by: 0004053stu