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The Characteristics of Living Things

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The Characteristics of Living Things All living things have cellular organization, contain similar chemicals, use energy, respond to their surroundings, grow and ... – PowerPoint PPT presentation

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Title: The Characteristics of Living Things


1
The Characteristics of Living Things
  • All living things have cellular organization,
    contain similar chemicals, use energy, respond to
    their surroundings, grow and develop, and
    reproduce.

2
The Characteristics of Living Things
  • Cellular Organization
  •  
  • All organisms are made of small building blocks
    called cells.
  •  
  • A cell is the basic unit of structure and
    function in an organism.
  •  
  • Unicelluar, or single-celled organisms are
    composed of one cell. Bacteria are unicellular
    and the most numerous organisms on Earth.
  •  
  • Multicelluar organisms are composed of many cells
    that are specialized to do certain task.

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6
The Characteristics of Living Things
  • The Chemicals of Life
  •  
  • The cells of all living things are composed of
    chemicals.
  •  
  • The most abundant chemical in cells is water.
  •  
  • Carbohydrates are a cells main energy source.
  •  
  • Proteins and lipids are the building materials of
    cells.
  •  
  • Nucleic acids are the genetic material-chemical
    instructions that direct the cells activities.

7
  • Carbon, hydrogen, oxygen, nitrogen, phosphorus,
    and sulfur (sometimes called CHNOPS) make up
    about 98 of the mass of all living organisms.

8
The Characteristics of Living Things
  • Energy Use
  •  
  • The cells of living organisms use energy to
    function
  •  
  • Response to Surroundings
  •  
  • Stimulus is the change in an organisms
    surroundings that causes the organism to react.
  •  
  • Stimuli include changes in temperature, light,
    sound, and other factors.
  •  
  • Response, an action or change in behavior, is an
    organisms reaction to a stimulus.

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11
The Characteristics of Living Things
  • Growth and Development
  •  
  • Living things grow and develop.
  •  
  • Growth is the process of becoming larger.
  •  
  • Development is the process of change that occurs
    during an organisms life to produce a more
    complex organism.
  •   
  • Reproduction
  •  
  • Organisms reproduce to produce offspring that are
    similar to the parents.

12
Growth and Development
13
Reproduction
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