Life Functions
Locomotion
• Moving
Digestion
• The
breakdown
of complex
food
materials
into forms
the organism
can use.
Nutrition
• Obtaining and
then
changing
materials into
forms an
organism can
use.
Egestion
• Elimination of
indigestible,
solid material.
Absorption
• Process by which
substances are taken into
the cells of an organism
Assimilation
• Incorporation
of materials
into the body
of an
organism
Circulation
• Process by
which
material are
moved
throughout an
organism
Respiration
• Release
chemical
energy from
certain
nutrients.
Synthesis
• Chemical
combination
of simple
substances to
form complex
substances
Ingestion
• Taking in
food from
the
environment
Growth
• Increase in
size
Homeostasis
• Maintaining a
stable
balanced
internal
environment
Excretion
• Removal of
cellular
metabolic
waste by an
organism
(CO2, H2O)
Reproduction
• Process by
which
organisms
produce new
organisms of
their own kind
Differentiation
• Process by
which cells
become
specialized for
specific
functions
(nerve cells,
muscle cells,
skin cells, etc.)
Metabolism
• The sum total
of all the
reactions
occurring
within the
cells of an
organism
Immunity
• The ability of
an organism
to fight off
foreign
invaders