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Biology is the study of life but, what exactly is life?
how are living things different from nonliving things
eg. a human from a rock
eg. a a human from a robot
eg. a living human from a corpse
also, how are all living organisms similar
what do we have in common with
eg. a bacterium
eg. a fish
eg. a frog
eg. an armadillo
So one of the most basic questions is: What is Life?
What is life
a highly organized interaction of matter and energy
can’t define in one sentence
must consider several properties of life or life functions:
each property taken individually is NOT unique to living things
many nonliving things do one or more of them
eg. viruses don’t quite fit
Properties of Life
1. maintaining boundaries:
-internal versus external environment
2. movement
3. responsiveness
-functions are regulated within and between cells
4. assimilation & digestion
5. metabolism
-anabolism & catabolism
6. excretion
7. reproduction
-survival of genetic information
8. growthÂÂ
Human Anatomy & Physiology General 2026/2027 8pages
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