CHARACTERISTICS OF LIFE 8 MAJOR TRAITS THAT ALL LIVING THINGS SHARE.
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Transcript of CHARACTERISTICS OF LIFE 8 MAJOR TRAITS THAT ALL LIVING THINGS SHARE.
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CHARACTERISTICS OF LIFE
8 MAJOR TRAITS THAT ALL LIVING THINGS SHARE
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Identify this Characteristic of Life
Ameba
Protists video
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Living Things are made up of 1 or more CELLS
•Cells are small, self-contained living units
•Unicellular organisms are made up of a single cellAmeba
•Multicellular organisms are made up of many cells
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Living Things can REPRODUCE
SEXUAL REPRODUCTION -
2 PARENTS – Offspring different from parents
• ASEXUAL REPRODUCTION -
1 PARENT –
To produce new organisms of the same type.
offspring copy (clone) of parent
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GROW & DEVELOP• All living things
grow or become larger (cell enlargement or
in cell #)• Most living things
go through stages of development in their life span
• (birth, infancy, childhood, adult, senior, death)
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Paramecia feeding
Tubeworms aroundHydrothermal vent
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Obtain and Use Energy
• Our bodies need energy to function
• Sun – ultimate source of energy for most life on earth
• Autotrophs use the sun’s energy to make food (Photosynthesis)
• Heterotrophs ingest other organisms for food & energy.
- Cellular Respiration – The process used by all living things to break down food to release the energy in it.
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HAVE A METABOLISM• Inside every living organism complex chemical complex chemical
reactionsreactions are taking place• Some of these chemical reactions build things
needed by the organism.– Ex. Protein Synthesis (the making of proteins)
These are called Anabolic Reactions.• Some chemical reactions break things down
– Ex. Digestion – all living things break down food to release the nutritents & energy in it.
These are Catabolic Reactions.
CATABOLIC REACTIONS +
ANABOLICREACTIONS = METABOLISMMETABOLISM
•Metabolism is the total total of all the chemical reactions going on inside an organism.
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RESPOND TO STIMULI
• All living things do this in order to keep alive & healthy
Examples: 1) Days become shorter and the
temperature gets colder - bears grow a thicker coat 2) Your body temperature goes up - you
sweat (Identify the Stimulus & the Response in
these examples)
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MAINTAIN HOMEOSTASIS
• Responding to the environment allows an organism to maintain HomeostasisHomeostasis.
• HomeostasisHomeostasis – keeping conditions inside their bodies
stable and suitable for life.Homeo – “same”Stasis – “standing” or “state”
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ADAPT AND EVOLVE
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8 CHARACTERISTICS OF LIFE
LIVING THINGS:1. ARE MADE UP OF CELLS2. REPRODUCE3. GROW & DEVELOP4. OBTAIN & USE ENERGY5. HAVE A METABOLISM6. RESPOND TO STIMULI7. MAINTAIN HOMEOSTASIS8. ADAPT AND EVOLVE