AIntro - Introduction to Cell Biology Heyer 1 Biology:...

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Unformatted text preview: Introduction to Cell Biology Heyer 1 Biology: Levels of Organization Biology: Levels of Organization n Cells: the basic units of life Cells: the basic units of life What are the Characteristics of Life n Complexity & Order n Regulation Homeostasis n Respond to changes in environment Physiology Behavior Evolution n Harness energy - metabolism n Growth and reproduction Inheritance - DNA n Cellular structure Cell Theory The Cell Theory The Cell Theory 1. 1. The cell is the basic unit of life. The cell is the basic unit of life. 2. 2. All organisms are constructed All organisms are constructed of cells. of cells. 3. 3. All cells derive from previous All cells derive from previous cells. cells. Biology: Levels of Organization Biology: Levels of Organization What does a cell need? What does a cell need? n Selective isolation from environment Selective isolation from environment (plasma membrane) (plasma membrane) n Energy (ATP) Energy (ATP) n Instructions (DNA) Instructions (DNA) n Machinery to carry out instructions and Machinery to carry out instructions and regulate processes (proteins) regulate processes (proteins) n Compartmentalization of incompatible Compartmentalization of incompatible or specialized activities (organelles) or specialized activities (organelles) Early views of cells Early views of cells n Microscope invented Microscope invented...
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AIntro - Introduction to Cell Biology Heyer 1 Biology:...

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