The Organization of Life
a. Origin of Life
i. Abiotic Production of Organic Molecules
1. Hypotheses on Origin of Macromolecules
2. Making Organic Compounds: The Stanley Miller Experiment & Others
Chemosynthesis: The use of inorganic substances such as carbon dioxide
to make carbohydrates from the energy released by chemical reactions.
ii. Macromolecules to Living Cells
1. Prebionts: Nonliving structures that evolved into the first living cells
2. Coacervates: Colloidal aggregation containing a mixture of organic compounds.
The formation of coacervates in the primeval soup was a step towards the
development of cells.
Organic molecules surrounded by a film of water molecules
Selectively absorb materials from surrounding water
Incorporate them into their structure
Not a random arrangement of molecules
Organic molecules surrounded by a double membrane
Can be formed from Proteinoids, when placed in boiling water & cooled.
iii. Microspheres = Protocells!!
iv. Earliest Evidence of Life