TwoOldGuys™ Study Guides
BI-122 Biology
Life Defined

Life: the Short List

All Living things (Organisms)
exchange matter & energy
with environment
_ consume matter & energy
from environment
_ release matter & energy
to environment
exhibit Homeostasis
_ metabolism
_ growth & repair
_ adaptation to environment
_ response to stimulus
Die
Reproduce

tentative definition of life

Life = "any complex, self-maintaining and self-reproducing system which exchanges matter and energy with the environment, and which is subject to death."



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revised 19 aug 2006