viernes, 28 de mayo de 2010
My last english class experience
Richard`s Experience:
Roswell`s Experience:
Yesenia`s Experience:
lunes, 10 de mayo de 2010
genetica y herencia


La genética es el estudio de los factores hereditarios o genes.
Desde siempre el hombre se interesó por descubrir el mecanismo hereditario, pero su complejidad es tal que solamente a fines del siglo pasado se pudo conocer el modo de transmisión de los genes, gracias a los estudios del agustino Gregorio Mendel que, en 1856 comenzó una investigación en el huerto de su convento que le llevo al conocimiento de las leyes de la herencia biológica. Realizó sus experimentos en razas de guisantes comunes, raza que seleccionó y cultivó reiteradamente.
Se ha podido comprobar estudiando escritos de autores anteriores que los hombres tuvieron ya desde la antigüedad algunas ideas sobre la herencia biológica.
Los resultados obtenidos fueron publicados por
Entre las cuestiones que estudia la genética destacan:
El material hereditario esta formado por núcleo-proteínas y esta contenido en los cromosomas. Hay casos en que, en lugar de núcleo-proteínas, existen ácidos nucleicos solamente. Pero unidos o no a proteínas, los ácidos nucleicos son los portadores de la herencia biológica en todos los seres vivos. Este es uno de los hallazgos fundamentales de la biología actual.
Los ácidos nucleicos se han conocidos perfectamente gracias a virus y bacterias, dada la unidad biológica estructural y funcional de todos los seres vivos. El ADN y ARN intervienen en las biosíntesis de ellos mismos y de todos los demás componentes celulares, según un código genético que se transmite de padre a hijos.
Mendel utilizó, lo mismo que sus seguidores inmediatos, organismos diplontes procedentes de un cigoto que, al tener dos series de cromosomas, tiene dos series de genes. Pero mucho más sencillo es el estudio en los seres procariontes pues, al ser haploide, falta en ellos la meiosis y tienen una serie única de genes. Sin embargo, por haberse conocido primeramente la herencia mendeliana, se estudiará ésta en primer lugar.
The genetics is the study of the hereditary factors or genes.
From always the man was interested for discovering the hereditary mechanism, but his complexity is such that only at the end of last century could know the way of transmission of the genes, thanks to the studies of the agustino Gregorio Mendel that, in 1856 it began an investigation in the garden of his convent that I take to him to the knowledge of the laws of the biological inheritance. It realized his experiments in races of common peas, race that it selected and cultivated repeatedly.
One could have verified studying writings of previous authors that the men had already from the antiquity some ideas on the biological inheritance.
The obtained results were published by the Company of Brunn's Natural History in 1866, but they had diffusion small and the scientific world overlooked them. In 1900, there were re-discovered the laws of the inheritance, of an independent and simultaneous way, for three investigators: Hugo de Vries, Karl Correns and Erich Tschermak, that they found on having searched carefully in the bibliography for Mendel's work and had to yield to this one the priority of the discovery.
Between the questions that the genetics studies they stand out:
The knowledge of the nature of the genes.
The knowledge of the carrying structures of these genes.
The mechanisms of transmission of these.
The influence of the genes in the development and evolution of the organisms.
The hereditary material this one formed by core-protein and this one contained in the chromosomes. There are cases in which, instead of core-protein, acids exist nucleicos only. But joined or not to proteins, the acids nucleicos are the carriers of the biological inheritance in all the alive beings. This one is one of the fundamental findings of the current biology.
The acids nucleicos have been known perfectly thanks to virus and bacteria, given the biological structural and functional unit of all the alive beings. The DNA and ARN intervene in the biosíntesis of them themselves and of all the rest cellular components, according to a genetic code that is transmitted from father to children.
Mendel used the same as his immediate followers, organisms diplontes proceeding from a zygote that, on having had two series of chromosomes, has two series of genes. But much simpler it is the study in the beings procariontes so, to the being haploide, the meiosis is absent in them and they have the only series of genes. Nevertheless, for the Mendelian inheritance having been known primeramente, this one will be studied first.

jueves, 6 de mayo de 2010
invento / Invention

Básicamente se trata de un aparato que puede ser utilizado para cargar teléfonos celulares sin necesidad de conectarlo al adaptador de la pared
Para producir la energía utiliza un motor generador lo cual a conectado a unas baterías recargables que a la ves que esta cargándose con el generador esta cargando la batería de algún teléfono celular
Todos sabemos la gran mayoría de las personas que están en tu entorno tienes teléfono celular.
Ahora imagínate todos los teléfonos celulares cargándose (mucha electricidad verdad )
Ahora imaginemos la inmensa cantidad de energía que ahorráramos si usáramos un objeto como este.
Además de ayudar la conservación de nuestro planeta
Yo contribuyo
Hazlo tú también….
Basically it is a question of a device that can be used to load cell phones without need to connect it to the adapter of the wall
To produce the energy a generating engine uses which to connected on a few rechargeable batteries that to you her see that this this one being loaded by the generator loading the battery of some cell phone
We all know the great majority of the persons who are in your environment you have cell phone.
Now imagine all the cell phones being loaded (many electricity truth)
Now let's imagine the immense quantity of energy that we were saving if we were using an object as this one.
Beside helps the conservation of our planet
I contribute
Make it you also ….
angel acevedo 5 cs B
