1_Life_&_Evolution

1_Life_&_Evolution - Introduction to Animal Biology...

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1 Introduction to Animal Biology © 2006: D. Julian Home Page What is life? © 2006: D. Julian Entropy Inanimate matter tends to quickly achieve a rest state… This is the state of thermodynamical equilibrium or "maximum entropy". © 2006: D. Julian
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2 Entropy and metabolism Life avoids this rapid decay into an inert state. The living organism forestalls such decay by eating, drinking, breathing and, in the case of plants, assimilating. This is called metabolism. The living organism constantly moves towards maximum entropy (i.e. death). It can only keep alive by taking negative entropy from its surroundings. In other words, it frees itself from the entropy it produces. (E. Schrodinger 1944) Inanimate matter tends to quickly achieve a rest state… This is the state of thermodynamical equilibrium or "maximum entropy". © 2006: D. Julian Order © 2006: D. Julian Reproduction © 2006: D. Julian
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3 Growth and development © 2006: D. Julian Energy utilization and metabolism © 2006: D. Julian Energy flow and transformation © 2006: D. Julian
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4 Homeostasis Organisms use chemical bond energy to manipulate and maintain the chemical and physical medium within cells and within whole organisms. In this way, organisms maintain control over their internal environment in an effort to maintain “optimal” internal conditions for life. © 2006: D. Julian Prokaryotes and eukaryotes © 2006: D. Julian Campbel and Reece, Figure 1.8 Various classification systems for living things © 2006: D. Julian
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5 Introduction to Evolutionary Adaptation
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This note was uploaded on 04/12/2008 for the course BSC 2010 taught by Professor Bowes during the Spring '08 term at University of Florida.

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1_Life_&_Evolution - Introduction to Animal Biology...

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