CheckPoint Origin of Life - protocells. My theory would be...

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We know from the reading that it is to be believed that the earth’s early atmosphere was different from todays. The earth’s air contained much more carbon dioxide and nearly no free oxygen. Meaning it would be assumed that it would be nearly impossible for life to be on earth, or at least it would seem that way. Scientists had numerous experiments conducted since the early 1950s in which they have confirmed that simple carbon based compounds, including amino acids, will spontaneously form under conditions typical of earth’s early atmosphere. This would lead many people to believe that there were other ways to explain life on our planet. We also know that astronomers commonly observed carbon based compounds throughout the universe. Meaning that there are other planets that are like ours when we first began. Over time, naturally occurring chemical processes combined simple carbon based compounds into more complex ones, including proteins, carbohydrates, lipids, phospholipids, and nucleotides (RNA and DNA) leading to
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Unformatted text preview: protocells. My theory would be that life began on earth with what was carried here on comets, stars and asteroids. Basic organic materials exist on these astrophysical bodies, and they are the base components of proteins. The first "spark" of life on the planet was probably some type of genetic material, or virus. These strands slowly evolved into DNA on a stifling planet, and later on into simple single celled organisms. This later may have evolved into anyone of the billions of different species of life that the plant has living among itself. Many people have certain beliefs that make them believe that life began from God. That he was the one that put everything in its place and gave everything meaning for life. This is another theory that I have embraced. There are so many questions and only so many answers. I cannot begin to understand how life began on a planet where there was nothing. I can only hope that life continues as it has done for years....
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This note was uploaded on 02/14/2010 for the course BIO 100 BIO/100 taught by Professor Ray during the Spring '09 term at University of Phoenix.

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