Transcript Characteristics of Living Things

Characteristics of Living Things
Alive or not alive?
All living things are made of
the same elements:
ARBON
• C_______
• H_______
YDROGEN
ITROGEN
• N_______
XYGEN
• O_______
Living things can:
•
•
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•
•
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Move
Grow
Made of cells
Reproduce
Respond to stimulus
Perform certain chemical activities
Life comes from Life
• People used to believe in SPONTANEOUS
GENERATION. This idea stated that life
nonliving matter.
could spring from _________
• Francesco Redi disproved this idea in 1668.
FLIES do not come from
He proved that ________
_________________,
they come from their
ROTTING MEAT
PARENTS
____________.
CELLS that came from
• All life is made of ______
CELLS
other ___________.
Movement
FOOD AND
• Living things move to get __________.
REPRODUCE
Metabolism
•
Metabolism is the _____
____ and
Building up
_______
______ of chemicals in an
Breaking down
organism.
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Ingestion
Digestion
• Respiration
• Excretion
Growth
•
Not only do living things grow by
larger
getting _______
they also develop by
complex
getting more _________.
Living organisms Respond to
Stimuli
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•
stimulus
A ______________
is any change in
the environment.
response
A _______________is
the action or
movement of an organism.
All life can REPRODUCE
•
•
__________
reproduction involves
Asexual
only one parent.
__________
reproduction involves 2
Sexual
parents.
Needs of Living
Things
• What do you need to survive?
Energy
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All life requires ENERGY. The main
source of energy for most living things is
the sun.
FOOD is a need of all organisms.
Water
•
Life could not exist without WATER.
– More than 65% of your body is made of
water.
– Most of the chemical reactions in living
things take place in water.
Space
• Organisms compete for LIVING SPACE