Life Processes

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Life Processes

• Ms. Chicherchia

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Nutrition -nutrients substances that an
organism needs for energy,
growth, repair, maintenance. -autotroph
organism that can make its own food -heterotroph
organism that can not make its own
food -ingestion -digestion
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Transport the process by which substances enter
and leave cells and become distributed within the
cells. -Small, simple organisms -Larger,
multicellular organisms most cells are not in
direct contact with the external environment.
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Respiration Respiration is a series of
reactions that breaks down sugar or another food
substance to produce water and carbon
dioxide. -aerobic respiration -anaerobic
respiration
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Synthesis -assimilation the incorporation
of materials into the organisms body Growth
-cellular specialization different cells
becoming specialized for different functions.
Excretion
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Regulation all the activities that help to
maintain an organisms homeostasis. In animals,
the nervous system and endocrine system are
involved in the process of regulation. The
nervous system carries messages in the form of
nerve impulses. The endocrine system produces
hormones. -hormones Reproduction the
process by which living things produce new
organisms of their own kind. -asexual
reproduction -sexual reproduction
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Metabolism -it includes the processes that
build complex substances from simpler ones and
processes that break down complex substances into
simpler ones. -Also involves the continuous
release and use of energy. -Many biologist
consider metabolic activity to be the single most
important life process!!!!