CHARACTERISTICS OF LIVING ORGANIMS BY MAGGIE'S TEACHING FILES

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Living Things

• You can tell if an object is alive
• or dead. You can also tell if an object has been
  alive in the past, or if it has never been alive
  at all.
• This is because all living things have certain
  characteristics in common

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What do such diverse organisms have in common?
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All these organism are living things?
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Organisms

• Organism any living thing
• In order to be considered an organism (living
  thing) it must
• Be made up of cells
• Use energy
• Adapt to surroundings
• React to changes
• Change or develop
• Produce more organisms

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Characteristics of Living Things

• All living things share certain, common
  characteristics.

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Living creatures are ORGANIZED

• All made of the same collection of chemicals, but
  we are organized as
• plant cells animal cells

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Living Things Have Cells

• All living things are composed of one or more
  cells.
• A cell is a membrane-covered structure that
  contains all the materials necessary for life.
• Different kinds of cells perform different
  function.

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ALL LIVING THINGS ARE Made of cells


basic unit of life

• The ____is the________

CELL

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ALL LIVING THINGS ARE Made of cells

• ____________organisms are _____________

made of only 1 cell
UNICELLULAR
bacteria
(Ex _________)
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ALL LIVING THINGS ARE Made of cells
MULTICELLULAR

• _________________ organisms_______ as _________
  but as adults are_________________________

BEGIN
ONE CELL
MADE OF MANY CELLS
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Living Things Sense Respond to Change

• A stimulus is anything that causes a reaction or
  change in an organism or any part of an organism.
• Gravity
• Light
• Sounds
• Hunger

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Characteristics of Living Things

• Living things respond to their environment.
• Organisms detect and respond to signals from
  their environment

For example, plants respond to light by growing
Mammals respond to cold temperature by growing
thicker fur.
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Living Things Sense Respond to Change

• As the external environment changes, the internal
  environment must remain stable. Maintaining this
  internal environment is called homeostasis.

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Characteristics of Living Things

• Living things maintain a stable internal
  environment.
• All organisms need to keep their internal
  environment relatively stable, even when external
  conditions change dramatically.
• This is called HOMEOSTASIS

Thermal images show that even though the
temperature outside the body is cool, inside
there is warm and stable environment.
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Living creatures use ENERGY

• Eating, digestion elimination of waste
• Synthesis building
• Cellular respiration making energy

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Characteristics of Living Things

• Living things obtain and use material and energy.
• All organisms must take in materials and energy
  to grow, develop, and reproduce.
• Chemical reactions breaks down materials in what
  is called METABOLISM.

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Living creatures GROW DEVELOP

• Get bigger
• Mature
• so they can reproduce

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Characteristics of Living Things

• Living things grow and develop.
• Every organism develops at a different rate.
• During development, a single cell divides again
  and again.
• After these cells divide they begin to look
  different from one another and perform different
  functions.

As a seed grows, different parts of the plant
develops.
Butterflies develop from caterpillars during
their life cycle.
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An icicle can grow, but why isnt it alive?
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Living creatures REPRODUCE
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Living Things Reproduce

• Organisms make other organisms similar to
  themselves.
• Reproduction is necessary for a species

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Living Things Have DNA

• The cells of all living things contain the
  molecule deoxyribonucleic acid, or DNA.
• DNA controls the structure and function of cells.
  The passing of traits through DNA is called
  heredity.

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In order to be considered living, it is a must
that an organism possesses ALL of these 6
characteristics, not just some. . . .
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• Living Things....
• Are made of one or more cells
• Detect and respond to stimuli
• Reproduce
• Have DNA
• Use energy
• Grow Develop

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