2nd term expectancy

I'm really excited about the team work that will be doing this term. I think that will be useful for the future. I like the subject we'll be working with and i'm sure that learning some tecnical vocabulary will be useful too.

Origin of life

PechaKucha: Origin of life

1. Hello, we are going to speak about the origin of life pointed from the religious myths and scientific theories. There are a lot of different myths because each culture has tried to explain our origin in their own way.
2.  For example, the maya myth says that the Popol Vuh (their god) created animals first,  then wet clay,  wood, and after that he created the first ancestors from maiz dough
3. In china, there is another myth: in the beinning the universe was a chaos. A cosmic egg appeared and  the egg was divided into three parts. From one part was created the sky, from another part was created the earth and from de inside art of the edd was created Pangu, a primitive human beeing
4. One of the religious theories about the origi of life is the creationism. This theory says that God created heaven and Earth in seven days an then Adam and Eva were send to that paradise to develop the human being.
5. In the Islam, another god, Alah; created the univerese in six long spans of time. In a lot of religions we can see myths and gods who were created to explain the things that we couldn´t explain using science.
6. Jainism: this religious theory says that there is no creator, They feel that no single beimg exists who could create the world and they question and critizise how an immaterial God could create a material planet.
7. Sikhism: Sikhs believe that God created the whole universe. Earth while being in the universe is a creation of God and all the life on Earth is a creation of God. It doesn't matter to a Sikh whether Earth was created in seven days or in 4 billion years.
8. Scientifically, the first living matter is considered to be the first cell that could do all the life functions: feeding, reproducting and relating to other cells or the environment. As you can see in the picture, the first cell was very simple, the DNA was not in a nucleus yet.
9. Panspermia is a scientific theory which says that life was created in Mars and an asteroid brought it to Earth, so we all are Martians originally. This theory was proposed by Herman Von Helmholtz.
10. According to the theory of the simple begginings the life might have begun with small molecules that interacted with each other and became more complex, like RNA or DNA. so the RNA wouldn´t be the first gene  molecule.
11. RNA world: this theory says that RNA was spontaneously arisen on Earth and it was developped into DNA, but although some scientists think that molecules could have spontaneously arisen on Earth, others say thtat was very unlikey to have happened.
12. There is another scienifical theory, called the chilly start. It says that the oceans might have been covered by ice. the ice might have protected the molecules and allowed them to react and they became more complex.
13. Deep.sea vents: life was created at submarine hydrothermal vents because this places are very rich in chemical and thermal energy. The rocky nooks could have concentrated hydrogen molecules and provided mineral catalysts for electrical reactions.
14. Then, the comunity clay theory  defends that the first molecules were met on clay because it had a lot of organic compounds and helped them to organize  like our genes do. So the clay woud have been an appropiate place for the begining of life. 
15. Electric spark: the compounds of the reducing atmosphere reacted with the energy of an electric spark and the first organic molecules were created. The scientist Miller-Urley did an experiment to prove this theory.
16. The abiogenesis is how we call scientifically the origin of life. "A" means none, "bio" means life and "genesis" means beggining and it was suposed to happen after the Big-Bang and the creation of the univerese and the planets, in the primordial soup and then the life was developed.
17. Abiogenesis is the natural process of life arising from non living matter. It happened more or less 4 billion years ago when the first organic compounds or cells reacted and gave rise to a living system.
18. Oparin was a Russian biochemist who was interested in the origin of life. He reviewed some panspermia theories but he didn´t think that was possible so he worked on a new theory with Haldane and made an experiment (similar to Miller-Urley´s)
19. John Burdon Sanderson Haldane was a British-Indian scientist who developped the theory of "Primordial Soup".This theory says that the origin of life on Earth consists on transformation of molecules.
20. Louis Pasteur was a French chemist and microbiologist. His principles discoveries were vaccination, microbial fermentation and pasteurization. With his experiments he prooved that life couldn´t arise spontaneously.