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LEVELS OF ORGANIZATION

Why cells work together

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Organisms

UNICELLULAR

MULTICELLULAR

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Unicellular

  • Have to do everything
  • Can’t rely on other cells
  • Success or Failure is individual

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Multicellular

  • Work in specific roles
  • Dependant on other cells
  • Success or Failure is group based

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Specialization

BENEFITS

DEFECTS

  • Increased efficiency
  • New possibilities
  • Conserve resources
  • Limited work area
  • Dependence
  • Loss of Genetic variance

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Who can Specialize?

UNICELLULAR?

MULTICELLULAR?

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MULTICELLULAR!

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SO WE CAN SPECIALIZE�AND ORGANIZE

but why would we want to?

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Specialiazation

Necessary for complex organization

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BUILDING FROM THE BOTTOM UP

Now with specialization multicellular organisms can get BIG, opening up a whole new world!

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Level 1�The Cell

  • Primary Level
  • Simplest level of organization
  • Specialized to perform one action

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Level 2�Tissue

  • Secondary level
  • Consists of one TYPE of cell
  • Specialized to perform a role

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Level 3�Organ

  • Tertiary level
  • Consists of multiple DIFFERENT Tissues working together
  • Specialized to perform one or several related functions

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Level 4�Organ System

  • Quaternary level
  • Consists of multiple DIFFERENT Organs working together
  • Specialized to perform related functions
  • Large Scale

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Finally Multicellular Organism

Capable of truly heroic acts