Life is often portrayed as spontaneously arising from some sort of "primordial soup". There it is ... quiet, tranquil, warm nutrients in a primitive sea, a lightning strike in the distance is imparting the energy of life ... soon life will be emerging to the shores... Hold it, not so fast here! To go from a barren lifeless planet to a one filled with living things, we would have to pass through a number of stages:
EARLY ATMOSPHERE -
For starters we need a favorable environment for life to evolve and be sustained.
SIMPLE ORGANIC MOLECULES -
We need a means of constructing the building blocks of life.
LARGE MACRO-MOLECULES (proteins, DNA, RNA, etc.) -
Some the simple molecules must be assembled into biologically useful large molecules.
BIOLOGICAL SYSTEMS -
Energy conversion must be constructed.
LIVING CELL -
And finally, all these molecules and systems must be assembled together to form a highly complex living cell.
2007-04-23
07:22:50
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26 answers
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asked by
Mark
3
in
Religion & Spirituality