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ELL Biology Ch 2

Characteristics of Living Things

organism any living thing
energy the ability to do work and cause change
stimulus a change in the environment that causes a response -- (Plural Stimuli)
offspring a new organism produced by a living thing
reproduction the way organisms make more of their own kind
cell the basic unit of structure and function in all living things
unicellular having one cell
multicellular having more than one cell
homeostasis the process by which organisms keep their internal conditions relatively stable
element a pure substance made of the same kinds of atoms
atom smallest part of an element that can be identified as that element
molecule the smallest part of a compound
compound a combination of two or more elements
response the reaction of a living thing to change
proton atom particle having a positive charge (+)
neutron atom particle having a neutral charge (0)
electron atom particle having a negative charge (-)
nucleus center of the atom composed of protons and neutrons
electron cloud area around the nucleus where electrons are most likely found
Created by: Jesse Wayland