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Homework Topic 1: Understand how life arose on the Earth Topic 2 Determine the general principles governing the organization of matter into living systems.

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Presentation on theme: "Homework Topic 1: Understand how life arose on the Earth Topic 2 Determine the general principles governing the organization of matter into living systems."— Presentation transcript:

1 Homework Topic 1: Understand how life arose on the Earth Topic 2 Determine the general principles governing the organization of matter into living systems Some authors to cite: Orgel, Eschenmoser, Wachtershauser, Cairns-Smith, Deamer, Dworkin, Schopf.

2 In the books Bennett: Ch. 3 and Ch. 5 Goldsmith: Ch. 7 and Ch. 8

3 Pillars of Life

4 Program Genetic Blueprint->DNA/RNA like molecule Some set or plan by which a code for the construction of an organism is passed from one generation to the next.

5 Improvisation Mutation- The occurrence of defects and natural selection allows the population to adapt to different and challenging environments

6 Compartmentalization You have to keep your insides in and the outside out Formation of cell membranes/walls Amphiphilic molecules

7 Energy Some basic fuel –Sun –Food (glucose) –Chemoautotrophs –Chemolithotrophs –etc.

8 Regeneration If you burn energy you must have a system to re-coup it New proteins, new DNA, etc.

9 Adaptability A behavior response to a malignant stimulus –You put your hand in the fire, it hurts, you take it out,

10 Seclusion Biochemistry and the chemicals in the organism all work for specific ends without precluding each other. Many rxns occurs at the same time without precluding each other.

11 DNA

12 Tree of Life rRNA

13 Endosymbiosis/Organelles

14 Origin of Life LUCA-Last Universal Common Ancestor Panspermia Miller-Urey Experiment RNA world Hypothesis and Rybozymes Life needs three things to get started: 1)Organic molecules 2)Energy 3)Aqueous medium (H 2 0)

15 Panspermia

16 Miller-Urey Experiment

17 Clay Theory

18


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