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Formation Of Protocells - College Term Papers

Formation Of Protocells


Today, we've realised that the very first life on Earth was indeed originated from abiotic surroundings. In fact, organic molecules have been successfully generated from abiotic elements by scientists
To understand how this creation of life from abiotic material occured, we have to consider a critical idea. Life originated from its abiotic surroundings. Thus, it is important for us to learn about the physical and chemical environments of the primitive Earth. The atmosphere of primitive Earth consisted of reactive, naturally availabe, molecules: Nitrogen (N2), water (H2O), methane (CH4), and ammonia (NH3), etc. These molecules what was needed to create life -- in fact, the percentage of ...

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there was also another source of heat from the young earth crust which was volcanically active.
For most chemical reactions to take place, a spark of electricity is needed, and this was provided by the lightning in the atmosphere. Amino acids basically consist of hydrogen, nitrogen, oxygen and carbon. Due to all of the lightning chemical reactions took place between molecules of N2 and H2, thus these molecules formed Amino acids.
A famous American scientist Dr Fox, was able to show how amino acids, the building blocks of proteins found in all living things, could spontaneously organize themselves into "microspheres." These cell-like structures, in the right conditions -- perhaps like those found shortly after the Earth was formed -- grow and multiply. A trace of these microspheres where found in fossils believed to be 3.4 billion years old. This once again inforces the theory of amino acids being the first building blocks on earth.

These amino acids, with the help of fatty ...

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PAPER DETAILS
Added: 8/21/2006 01:27:43 PM
Category: Science & Nature
Type: Premium Paper
Words: 797
Pages: 3

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