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Introduction to Introduction to BiologyBiology
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Biology – The Study of LifeBiology – The Study of Life http://www.youtube.com/watch?v=juxLuo-sH6M
What are the 7 characteristics of life.
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1.CELLS All living things are
made of cells
Can be unicellular or multicellular
Can be eukaryotic or prokaryotic
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2. Homeostasis2. Homeostasis Organisms must Maintain very
stable internal conditions - HOMEOSTASIS
Temperature, water content, chemical content, etc. must be maintained
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Responsiveness-React to Responsiveness-React to surroundingssurroundings
Respond to stimuli Respond to stimuli in the external environment
Detect and respond to changes in light, heat, light, heat, sound and chemical sound and chemical and mechanical contactand mechanical contact
Coordinates it’s responses
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3. Reproduction3. Reproduction All organisms produce new
organisms like themselves REPRODUCE
Organisms transmit hereditary information to their offspring inheritance
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4. ENERGY4. ENERGYRequire a constant supply of energy to maintain their orderly state - metabolism
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5. Growth and 5. Growth and DevelopmentDevelopment
Growth occurs as the result of cell division and cell cell division and cell enlargementenlargement
The process by which an adult process by which an adult organism arise organism arise is called developmentdevelopment
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6. Adapt and Change Living organisms must be able to
adapt to their surroundings and change.
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7. ORGANIZATION
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REVIEW What is homeostasis
List 3 of the 7 characteristics of life
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