Lecture 3 - BIOL104-04 Principles of Biology I Lecture #3...

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BIOL104-04 Principles of Biology I Lecture #3 August 27, 2010
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Unifying Themes in Biology • Cell Theory • Molecular basis of inheritance • Diversity of life arises by evolutionary change • Evolutionary conservation • Cells are information processing systems • Living systems exist in a nonequilibrium state
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What is a Cell? • A highly organized living entity – Plasma membrane – Contains concentrated chemicals in a aqueous solution
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The Cell Theory • All organisms are made of cells • Cells are the smallest living things • All cells come from preexisting cells.
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The Cell Theory • All organisms are made of cells • All cells come from preexisting cells. Implications of the cell theory • All life on earth represents a continuous line of descent from the earliest cells • All single-celled organisms in a population are related to one another • All cells in a multi-cellular organism are descended from the same fertilized egg
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This note was uploaded on 05/03/2011 for the course BIOL 104 taught by Professor Bray-speth during the Fall '11 term at Saint Louis.

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Lecture 3 - BIOL104-04 Principles of Biology I Lecture #3...

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