Puzzle Description:

Model of a prokaryote cell, the first form of life on earth. Algae and bacteria are types of prokaryotic cells.

#1: Teresa K (fasstar) on May 16, 2010 [SPOILER]

The Archean Eon is the second eon in the Precambrian Period. Life was probably present throughout the Archean, but may have been limited to simple non-nucleated single-celled organisms, called Prokaryota (formerly known as Monera).

The first living things on Earth, the single cell prokaryotes (which lack a cell nucleus), probably evolved from protobionts (organic molecules surrounded by a membrane-like structure). The oldest ancient fossil microbe-like objects are dated to be 3.5 Ga (billion years old), approximately one billion years after the formation of the Earth itself.

The sequence of chemical events that led to the first nucleic acids is not known. But there are several theories. Read about abiogenesis here:

http://en.wikipedia.org/wiki/Abiogenesis

Researchers have made great advances in the past few years. Learn what scientists have discovered about the beginning of life on earth:

http://universe-review.ca/F11-monocell.htm

very informative
this could have been a wcp 59 puzzle because its larger than in real life

That is true. Not very artistic though.

Puzzle científico, muy acorde con la época que vivimos.

Sí, cada día aprendo más y más sobre biología.

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