Living Eternons |
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1 Life Everywhere 2 Particles 3 Atoms 4 Molecules 5 Emergence 6 Clays 7 Carbon 8 Macromolecules 9 RNA and DNA 10 Viruses 11 Protocells 12 Cells 13 Plants 14 Animals 15 Humans 16 Lamarkism 17 Darwinism 18 Eternism |
9 - RNA & DNA: Smart Molecules Eternons of sheer energy had become particles. Particles had assembled into atoms. Atoms had combined into molecules. Structures were getting increasingly complex and conscious. Eternons had to develop more efficient construction and reproduction mechanisms. They conceived the famed nucleic acids: RNA (Ribonucleic Acid) and DNA (Deoxyribonucleic Acid). RNA and DNA store and transfer all the information for the growth and reproduction of every organism on Earth. RNA and DNA are chains of nucleotides, from a few thousand to several million units long. The atoms that makes them are nothing special. They are plain hydrogen, carbon, nitrogen, oxygen, and phosphorus. The way these atoms are assembled is no more singular. All nucleotides have the same simple configurations. What makes DNA and RNA so special is how they store information. They do it in the order of certain molecules, named bases, which enter into their composition. RNA for instance uses four of five bases, usually named after their first letter: A, C, G, T,and U. For instance, a strand of RNA will look like this: ACU UGG GAC AAG..., etc. Each group of three successive bases, like ACU or UGG, is a codon. A given codon indicates that a given amino acid has to be brought to a given assembly line at a given place. Thus, the very spatial shape of RNA is what defines the work to be done. It says to other molecules: "pick up this amino acid, this one, and that one; and put them together." It is in this fashion that every minute of our life, and without our even being aware of it, billions of molecules handle billions of amino acids to build billions of proteins within our body. DNA is similar to RNA, yet more elaborate. Not only does it store data, but it copies itself, ensuring the preservation of these data. It has evolved to represent the true essence of a living organism. DNA is made of two parallel chains of nucleotides instead of one as is RNA. The two chains form a spiral ladder. The cross-pieces, or rungs, are the A, G, C, and T bases facing each other. Due to their particular geometry, these molecules are not paired at random. A is always facing T, G is always facing C. Consequently, the two halves of the ladder are complementary rather than identical. When DNA wants to copy itself, a number of spectacular events occur along the entire length of the ladder. First, the spiral uncoils. Then, a special protein, called an enzyme, comes and splits the ladder in the middle of the rungs. Nucleotides swarm to the site, and using each half ladder as a template reconstruct two complete ladders. For every rung, they make sure that the new base is the complement of the one in place. This base-pairing rule guaranties that the two new DNA ladders will be perfect replicas of the original. RNA and DNA have been likened to Morse code signals, to piano rolls, to magnetic tapes, to books, even to entire libraries. But RNA and DNA are far more than storehouses or copiers of symbols; they are templates for the physical organization of matter. Their straightforward construction mask an intricacy beyond our understanding. Truly, everything about these Eternon structures is mind-blowing:
How can we believe that random encounters of molecules would suffice to produce such craftsmanship? How can we speak of "mindless matter" when we discover so much intelligence? As proof of the pervasive consciousness of matter, nucleic acids would be more than enough. But, as Eternism make obvious, our world offers many more evidences of the overwhelming genius of Eternons. NEXT HOW TO VISIT© Copyright 2000 Eternon International - All rights reserved. |