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 Automatic translation  Automatic translation Category: evolution
Updated April 26, 2015

Image: Carbon is mass produced by nucleosynthesis (fusion of three helium nuclei) in the heart of massive stars, then released into space when they explode. Our chemistry, one that constitutes us, started with a small molecular edifice built on a carbon skeleton. When you see those collection ordered molecules, we understand the difficulty to recreate life in the laboratory.
Proteins are not living structures, and these already macromolecules, based on carbon, are extremely complex, they are formed by amino acids linked together by chemical bonds. The assembly of these molecules and their conformation that is, the order and the form of the three-dimensional structure, are of major importance because they determine the very specific actions of the molecule, chemical functions that are part of a manufacturing plan. The human perspiration, ether or vanilla are formed of the same molecules (carbon, oxygen and hydrogen), which differentiates them is their conformation.

  passage, inert to the living

Image: synthesis of the long road of inert to living or the first particles to consciousness. The material combines in agglomerate, self-organizing chemically and complex constantly at the whim of electromagnetic links. It seems that life is a special form of the material both unpredictable and indefinable. But its tenacity is it not proof that it is present everywhere in the Universe, patiently waiting a favorable environment to continue its path to complexity?
There really is no free border between inert and living, the matter uses the principle of least action to build the living. The image reads between the two question marks, winding from the lower left to the upper right. The question mark at the bottom left is the big bang followed quarks, nucleons, atoms, molecules with amino acids and proteins, albumin, cell, archaea and bacteria, microorganisms, mammals, consciousness and the future.

In principle the least amount of action for mechanics (1744), Pierre Louis Moreau de Maupertuis (1698 − 1759) defines the action as follows: "The action is proportional to the product of the mass by the velocity and by the space. Now here's the principle, so wise, so worthy of the Supreme Being: when any change happens in nature, the amount of action used to this change is always the smaller that it is possible. » Quarks are charged elementary particles reacting to the strong nuclear force. Protons and neutrons are each composed of three quarks discovered by an American physicist Murray Gell-Mann. In the standard model of particle physics, 4 elementary particles are sufficient in principle to build the world around us: the up and down quarks, the electron and the electron neutrino. An electron is an elementary particle of the atom, it is a universal constituent of matter that has a negative electric charge sign denoted e. The electron has a charge considered indivisible, e = 1.59 x 10-19 coulomb and a mass m = 9 x 10-28 gramme. An electron volts, eV = 1.602 x 10−19 joule. The concept of an indivisible amount of electric charge is developed from 1838 by the British naturalist Richard Laming (1798  − 1879). The Greeks noticed that amber attracted small objects when rubbed with fur. The Greek word ἤλεκτρον (electron) refers to amber. The electron was the first elementary particle demonstrated in many experiments from the late nineteenth and early twentieth centuries.

1997 © − Astronomy, Astrophysics, Evolution and Earth science.

life evolves, sheltered from the glaciations
Life evolves, sheltered
from glaciations...
living tree
Border between
inanimate and living...