Cell theory (established as FACT, proven by SCIENCE)
- All living organisms are composed of one or more cells.
- The cell is the basic unit of structure and organization in organisms.
- Cells arise from pre-existing cells.
Evolution Theory (supposedly established as FACT because the alternative is simply untenable.)
Cells can come from non-cells. The quote taken from this website explains in layman terms how it is possible:
QUOTE
These early cells were pretty simple - a molecule with a wrapper around it to keep it safe. Many scientists think that life on Earth first began about four billion years ago when amino acids developed into RNA, a larger molecule made out of amino acids that has the ability to reproduce itself, and also to make proteins. RNA was very unstable though - it often broke apart or changed the order of its atoms. After a while, some RNA evolved into DNA, which was a more stable, though more complicated, version of the same idea.
UNQUOTE
For those who wants a more professional explanation may refer to the links below:
How life evolved: 10 steps to the first cells (New Scientist article dated 2009-10-14)
How did life originate?
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