lect2.s08whatislife2 (1)

lect2.s08whatislife2 (1) - What is life? Metabolism...

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What is life? • Metabolism • Reproduction • Evolution Life is a chemical system capable of Darwinian Evolution . • “The arrangement of the atoms in the most vital parts of an organism and the interplay of these arrangements differ in a fundamental way from all those arrangements of atoms which physicist and chemists have hitherto made the object of their experimental and theoretical research.” • --Edwin Schrodinger
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From Schrodinger: • “Living matter evades the decay to equilibrium”, and life “feeds on negative entropy”. Life does this through metabolism, overtly by eating, drinking, breathing, or the exchange of material, which forms the root of the word from its original Greek definition.
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What do you need for life? • A membrane • Metabolic machinery • A chemistry set • An information system • A method of reproduction
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How can our kind of life be defined? • Uses DNA
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lect2.s08whatislife2 (1) - What is life? Metabolism...

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