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7th Chapter 1

Living Things

organism living things
cell basic unit of structure and function in an organism
unicellular a single celled organism
multicellular organisms composed of many cells
stimulus a change in an organisms surrounding that causes the organism to react
response an organism reacts to stimulus with a change in behavior
development the process of change that occurs during an organisms life to produce more complex organisms
spontaneous generation mistaken idea that living things that can arise from nonliving sources
controlled experiment a scientist carries out two tests that are identical in every respect except for one factor
autotroph organisms that make their own food
heterotroph organisms that cannot make their own food
homeostasis the ability to maintain stable internal conditions
nucleus a dense area in the cell that contains nucleic acids. The brain of the cell
prokaryote organisms whose cells lack a nucleus
eukaryote organisms with cells that contain nuclei
Created by: jamimurray