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History of Biology
The origin of the life
Diversity of the living beings
Theory of evolution
Behavior
Ecology
Genetics
Animal histology
Blod tissue  
Cytoplasm


The origin of the life

 

All the alive beings are formed by organic substances and without them the life would be impossible. The carbides and nitrides were exposed in the atmosphere that when warming up itself they triggered in chemical reactions that gave rise to the formation of hirocarburos and ammonium. These hydrocarbons were simple of alifatic and not saturated type with short chain. The Earth atmosphere had remained of this form if the life did not arise. Once formed hydrocarbons and ammonium, secondary reactions among them and the water took place giving rise to the formation of other molecules with greater complexity.

After the Earth cooling the water I am condensed forming the seas and oceans, the water had organic compounds being therefore diluted organic compound solutions.

The organic reactions need the presence of catalysts so that they are possible to be carried out with the suitable speed, these reactions were the people in charge of the appearance of the aminoacids ones which by curing reactions as well formed the proteins and these were grouped as well forming the colloidal systems. The colloids attracted the water forming close connections and in addition loaded electricly, when colloid of opposite load they were united formed the coacervates. Of course these lacked life but if they had the potentiality to create it and to originate the first alive beings. The own coacervates originated reactions of synthesis of dynamic way, some of these coacervates let behave of heterothroph form and were able to assimilate the energy of the sun, appearing the first autotroph coacervates. These autotrophics forms could not gather atmospheric oxygen but if they were able to fragment oxides of this form oxygen happened to the atmosphere and thus it could be caught.

EVIDENCES OF THE EVOLUTION

A) Tests of compared morphology, are to say to compare the animal structures different. The cells specialized in making certain functions, these were grouped in weaves, organs and finally in systems. The organization implies that groups and these in the other greater ones can arrange themselves in, demonstrating the descendants from a common predecessor. In these studies also the presence of in principle devoid structures of purpose is shown are the vestigiales structures (appendix, molars)

B) Embryologic Tests, made from the study of the embryos by means of similarities, appeared different theories but of this form it was able to find common trunks between organs very differentiated.

C) Tests of compared and biochemical physiology, imply the study of proteins since the proteins of an animal can be nonown for another one. In the inferior animals the species defer from others in less characters of this form transplanted weaves have a greater frequency of successes than in superior individuals.

D) Ecological Tests, there are different degrees from evolution, which can be seen in the differences that take place in the relations of an alive being with the means that surround to him.

E) Tests of taxonomy and distribution, the similar geographic areas that are in favor separated of physical barriers, have very different biotics communities, in spite of presenting/displaying common characteristics due to a convergent evolution.

F) Paleontological Tests, would be the study of fossils, allows to clarify the morphology of the alive beings.

G) Genetics Tests

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