Biology:The Living Environment
Mr. Saccone
Chapter 1
The Concept of Life
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Biology- The study of living things.
Bio – Life, living
ology- The study of
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Living things are known as
organisms.
(I) All living organisms carry on the
following life functions:
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Nutrition
The activities by which living things
obtain food and process it for
growth and repair of their body
cells.
http://www.innerbody.com/anim/mouth.html
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Nutrition
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Transport
The absorption and circulation of
materials within an organism.
http://www.innerbody.com/anim/card.html
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Respiration
The process by which energy stored
in food is converted to a form that
can be used by the organism.
RESPIRATION IS NOT
BREATHING!
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Respiration
The production of energy!
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Excretion
The removal of cellular wastes from
an organism.
*egestion- removal of undigested
materials (feces).
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Synthesis
The process by which large molecules
are built from smaller molecules.
Ex:
1 +
1 = 2
small + small = large
Amino Acid + Amino Acid = Protein
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Regulation
Involves the control and coordination
of all activities of an organism.
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Growth
Involves the increase in cell number
and cell size of an organism.
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Reproduction
The production of new individuals.
*survival of the species
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(II) Metabolism
All the chemical activities that take
place in an organism to keep it alive.
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(III) Homeostasis
The maintenance of a
stable internal environment.
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