jueves, 30 de junio de 2016

Meiosis

Meiosis  es una de las maneras de la reproducción a nivel celular, este proceso se lleva a cabo en las glándulas sexuales para la producción de gametos. La meiosis es un proceso de división celular en el cual una célula diploide (2n) experimenta dos divisiones sucesivas, con la capacidad de generar cuatro células haploides (n). Respecto a los organismos con reproducción sexual, este proceso aparece en la producción de óvulos y espermatozoides.
En la meiosis debe tener lugar una correcta separación de las cromátidas hacia los polos durante la anafase, cuando esto no se lleva a cabo, o hay un retraso en la primera o segunda división meióticas, conduce a problemas en la configuración de los cromosomas, alterándose el número correcto de estos, es decir, dejan de ser múltiplos del número haploide original de la especie. Sobre estas anomalías se encuentran la monosomía (2n-1) y la trisomía (2n+1)

Por un lado, los problemas en cuanto a la monosomía son:

  • Monosomía autosómica: produce la muerte en el útero.
  • Síndrome de Turner: solamente un cromosoma "X" presente. Los afectados son hembras estériles, de estatura baja y un repliegue membranoso entre el cuello y los hombros. Poseen el pecho con forma de escudo y pezones muy separados, así como ovarios rudimentarios y manchas marrones en las piernas.
Por el otro, algunos de los problemas en cuanto a la trisomía son:
  • Síndrome de Down .- Trisomía del cromosoma 21: es la aneuploidía más viable, con un 0,15% de individuos en la población. Incluye retraso mental (C.I de 20-50), cara ancha y achatada, estatura baja, ojos con pliegue apicántico y lengua grande y arrugada.
  • Síndrome de Klinefelter - Un cromosoma X adicional en varones (XXY). Produce individuos altos, con físico ligeramente feminizado, coeficiente intelectual algo reducido, disposición femenina del vello del pubis, atrofia testicular y desarrollo mamario.
  • Síndrome de la superhembra - Un cromosoma X adicional en mujeres (XXX). No supone un riesgo aumentado de problemas de salud. Las mujeres con esta condición son altas, de bajo peso, con irregularidad en el periodo menstrual y rara vez presentan debilidad mental.

lunes, 20 de junio de 2016

The Wall

1)     
The boy sees masks on the faces of the people in the train. Later he sees similar masks on the faces of the children in his fantasy. What is the meaning of that?
Both in the real life (train) and in the boy's fantasy (with children) the people are the same, nothing has changed between real life and fantasy, meaning that the boy has lost his imagination because he was taught to think equally.
2)     
The riot scene ends and the camera returns to the boy in the classroom as the children recite the lesson. Think of a possible explanation for this.    
The boy was thinking about that riot and that would that if he had the chance, he would cause or be part of the riot.
3)     
What kind of education does the movie portray? Use the song “The happiest days of our lives” to help you.
Taking into account the song, the education portrayed shows that the teacher hurt and disrespect his students as he receives the same behaviour from his psychopathic wife.
4)     
Education is only one of the various social institutions the movie deals with. What others did you notice and how are they portrayed?
The movie portrays many social institutions, education is one of those, however there are at least two more that we could identify: Goverment and Family. Goverment could be defined as the head social institution, the one which controls education and family. It is the institution which tells what to teach to the children, what social context do they have to live in, and the one which decides if children need education. The Goverment as social institution is the “head institution”, Pink Floyd critice the goverment for making and manupulating the entire system as they wished, the Goverment decided what children may think, and they also decided what the childrens family should encourage them to do.
5)      
We, in Argentina, often rely on education to solve most of our social problems. We blame education, or the lack of it, for many of them. Consider the huge success (described in the text below) of the song “Another brick in the wall” which claims “we don’t need no education” and compare it to what you think about education.
While the song is not the first example of the anti-education theme in popular music, it comes at a time when increasing numbers of students are questioning the value of their education. Thus, young people are responding to the song with uncommon — and unsettling — enthusiasm.
In May [1980], the South African government banned the song — and the album — "because "Another Brick" had become the anthem of a national strike of more than 10,000 "coloured"
(mixed) students and their white supporters. The students had been protesting the inequality of spending on education for the various races, as well as "intimidation" by teachers, whose authority the Pink Floyd song challenges. The government ban forbids radio stations to play the record, stores to sell it, and individuals to own it.


After reading the text, and realising the impact the song made in South Africa, and after reading the lyrics, we will compare them to what we consider education is. It is true that nowadays we blame the lack of education he distract the attention or simply to avoid deeper problems in society.  The song “Another Brick in The Wall” was used in South Africa as an anthem to national strikes.  The song was written to criticise the government of those days, and the strict control over children,  how authorities abused of their superiority to mock or to punish students and how the government of those days “shaped” kids to be one more brick, without any reasoning out of the box. Nowadays, everyone should access to a good education, in order to learn social parameters, and to prepare for future. We think that, if education is not used as a method to “shape bricks”, then it should be compulsory and everyone should get free access to it.
6)    
 Up to what extent is education a way of “thought control”?
    Education can easily used as a way of “thought control”, because it is a huge social institution in which many parents trust and where they send their kids to learn. Furthermore, parents are not present while their kids learn, so the institution can argue that they are teaching maths when really they are teaching not to think “out of the box”. It could be consider as one of the mayor's “thoughts controllers”.

7)     
Explain the meaning of the double-hammer symbol. Use the scene “In the flesh” to answer.
The meaning of the double-hammer symbol take us to a history episode that may represent fascism or even Nazism as the hammers can form the swastika. Also, the symbol represents oppression and a cause to feel terror. Towards the scene “In the flesh” Pink shows himself as Hitler in a way, being mean to the “audience”.
8)     
 The children falling into the meat grinder is a visual metaphor that makes a powerful point. What is the metaphor and what point does it make?
The scene where the children are falling into the meat grinder has to do with the plans that the system requires towards the kids, the children are reformed in a way that all will be mentally the same.
9) 
 What is the wall? Can you say whether it is a good thing or not?
The wall is a mentally object that is considered as a separation from you and the outside world. Throughout our years of life, our actions made the wall in consequence. It may be portrayed as a good thing the wall, because it separates you from the things you fell uninteresting or dangerous but also it gives the idea of complete isolation, for example, the scene where Pink is in that hotel room thinking about his memories.



lunes, 13 de junio de 2016

Alliance Française

Allons à L´Alliance

Nous sommes allés a la Alliance Française le mardi 17 mai avec notre compagnons du collège. Nous nous sommes divisés en deux groupes niveau A1 et A2. Nous avons faitdeux activités différentes,  dans la première activité, le groupe A2 doit regarder une vidéo d’un gorille et un âne parlant sur un livre. L’âne ne savait pas qu'il était un livre. Et aussinous avons regardé autre vidéo sur différentes façons de salutations, etc. Dans la deuxième activité nous sommes allés à la médiathèque, et nous avons fait une activité qui était : trouver des choses qui nous sont demandé. Mon groupe de A1 a fait le même mais nous l´avons fait dans un ordre différent, nous sommes allés a la médiathèque et aprèsnous sommes allés a une salon pour voir une vidéo sur le différents accent parlantfrançais.

En résumé, cette visite était une magnifique expérience pour cette langue, Et aussi nousavons obtenu nouveau stylo!

 

miércoles, 11 de mayo de 2016

Why is it difficult to know the truth about historical events?

History and its events are what makes us today, our way of thinking, our culture, what to support and ignore. The question is, in all the abstract things we believe in, are all the moral values an specific society grew up with believable? Are the documents written on history's textbooks taken into account and the poilitics are the result of history impartial?
On the one hand, today's people should rely on past events which they were taught, except someone decides to start a vast and extensive investigation to really know what had happened, no one living nowadays had a self experience on the past so the most common attitude would be not to doubt about the events presented. Evidence might be consudered as the best example to rely on, nearly all the textbooks contain the same facts so why not to follow the statement written. Moreover, historical events are the basis of our ideologies, that would say politicians would not be capable to hide or distort  the truth of facts because thre can be an upcoming risk of turning into a fraud if so.
On the other hand, doubts may be present in the history books because some events are not fully developed or cannot be completely understood. Furthermore, information may get lost in crucial moments of an specific event. Evidence has the possibility of being altered, meaning that the facts are changed and maybe hidden. Likewisein politics, not only is history manipulated, they also use it as an advantage when it comes to preotest against other nations for self-convenience in order to get profit out of it.
In conclusion, historical facts are the cause of our today's ideology, culture and moral values. Questioning it is a huge challenge because plenty of material is requested, this action can be judged because it is like a self-convincing that our culture is a lie, anyway, asking for the truth is a right we all must know.

jueves, 5 de mayo de 2016

Mitigación, la solución?

En la situación en la que encontramos al medio ambiente, el panorama no parece mejorar y hasta empeora. No hay una idea que cambie de un día para el otro el planeta, pero pueden encontrarse maneras de ir mejorandolo y "limpiándolo" poco a poco. La mitigación es una de estas respuestas, ya que consiste en reducir los daños causados en el ambiente. Con éste emprendimiento se adjuntan ejemplos muy claros, como el cambio de focos comunes a los de bajo consumo, de ahí nace el ahorro. Usar energía sustentable o reducir el uso de combustibles y gases van a causar una pequeña pero considerable mejora en la naturaleza. Pero esto, depende de los demas? De las poderosas e importantes empresas del mundo? No del todo, los individuos de nuestra sociedad podemos sumar nuestro granito de arena. Reducir el impacto negativo con uno positivo, pequeños de cada uno que a la larga se acercará al objetivo.



miércoles, 20 de abril de 2016

Huella ecológica

La huella ecológica que el ser humano deja en la Tierra cada vez es más grande y alarmante. El documental visto mostró lo que una persona consume y desecha a lo largo de su vida. Buscar la forma de reducir ese impacto es la solución para este problema en crecimiento.





                 "De los males debemos escoger el menor" - Aristóteles
La huella ecológica que marcamos en el mundo se incrementa a partir de la vida madura del hombre, ya que al querer formar familia, ya sea comprar una casa o alimentar más bocas, su impacto es más grande. El consumo aumenta, y éste junto a la huella son males que cada vez va a costar más reparar.   Dejar de lado el consumo innecesario va a reducir rotundamente este problema.


"El que logra comenzar un camino lo tiene ya medio hecho" - Séneca
Al poder tomar la decisión de dejar hábitos 'dañinos' de cara al futuro, ya aplicar el camino considerado va a causar menos sensación en el cambio ya que la persona va estar mentalizada para actuar de esa manera. Dejar de lado el consumismo, que resulta en contaminación, y limitarse lo más posible a la compra de recursos/necesidades básicos/as va a reducir la huella que marcamos.

jueves, 14 de abril de 2016

Biología: Transcripción y Traducción

Ambos vídeos muestran procesos con respecto al ADN, ambos actúan sobre lo mismo, pero su labor son diferentes yt cruciales para nuestras millones de moléculas que se encuentran en nuestros cuerpos