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Ch. 1

Characteristics of Living Things

TermDefinition
Biology study of life and how living things interact with the environment
Organism has or once had the defining characteristics of life
Organization of humans atoms > molecules > organelles > cells > tissues > organs > organ systems > organism
cell(s) basic unit of structure and function of all living things
energy constant supply to maintain metabolism, which is all the chemical reactions in a living thing
responds to stimuli reaction to an internal or external stimulus
homeostasis maintaining a stable and balanced internal condition
grows get bigger
develops maturing process; moving from one life stage to another
reproduction creating a new generation of organisms
species organism that breeds and produces fertile offspring like itself
heredity passing on of genetic traits from parent to offspring
adaptation (adapt) being able to change with a changing environment by passing on favorable traits to offspring (quicker process - takes a few generations)
evolve (evolution) to gradually change and develop over a period of time (slow process - takes many generations)
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