The crash of meteors on early Earth likely generated hydrogen cyanide,
which could have kick-started the production of biomolecules needed to
make the first cells.
Joe Tucciarrone/Science Photo LIbraryCorbis
4 comments:
Siji
said...
It is very interesting how they created the molecules needed for nucleic acid with hydrogen cyanide, hydrogen sulfide, and ultraviolet light. Also, because the same conditions with cause nucleic acid make amino acids and lipids a single set chain of chemical reactions could have started life. If this is true it would solve one of the most pondered questions, because life can't be built by individual molecules, just like you can't create a living human out of the molecules in humans. This reaction of molecules could be very influential in solving this great mystery. I have a theory that these molecules could have been traveling on comets, and because Earth was created from comets colliding into each other, these molecules would have had a series of reactions, which generated life.
For being such a short article, it had a lot of information. I had to read the article a couple of times to understand most of it. I thought that highlighted an interesting problem that you need RNA to make proteins and you need proteins to make RNA. As if that was enough, there is the problem that lipids are needed to make enzymes, but you need enzymes to make lipids. If scientists can prove that all of these compounds were created at the same time, then they will know how life was first created. I wonder if scientists researching this will ever be able to conduct any experiments that could prove their theory on this.
For such little to cause a whole planet of life is amazing. To begin, learning about the notion that life could have come from another planet, via asteroid or meteoroid, astounded me, because I had always thought that Earth life started on Earth, not traveled here, as the article suggested. Next, I thought it was interesting how both RNA and proteins needed each other to make each other. Lastly, I thought it was cool that the molecules were recreated with HCN, H2S, and ultraviolet light! This article showed me a whole new perspective of the way that life came from the first bacteria all the way to modern plants and animals.
Wow. This article was amazing. I agree with Owen that this was definately an example of quality over quantity. It is certainly breaktaking that something you cannot even see with the naked eye can create something so large. Although this article gave a very clear and possible theory this will probably never be proved because it is such a hard topic to find evidence for. I found that this article was slightly hard to follower, however, I did retain a lot of very interesting information from it.
4 comments:
It is very interesting how they created the molecules needed for nucleic acid with hydrogen cyanide, hydrogen sulfide, and ultraviolet light. Also, because the same conditions with cause nucleic acid make amino acids and lipids a single set chain of chemical reactions could have started life. If this is true it would solve one of the most pondered questions, because life can't be built by individual molecules, just like you can't create a living human out of the molecules in humans. This reaction of molecules could be very influential in solving this great mystery. I have a theory that these molecules could have been traveling on comets, and because Earth was created from comets colliding into each other, these molecules would have had a series of reactions, which generated life.
For being such a short article, it had a lot of information. I had to read the article a couple of times to understand most of it. I thought that highlighted an interesting problem that you need RNA to make proteins and you need proteins to make RNA. As if that was enough, there is the problem that lipids are needed to make enzymes, but you need enzymes to make lipids. If scientists can prove that all of these compounds were created at the same time, then they will know how life was first created. I wonder if scientists researching this will ever be able to conduct any experiments that could prove their theory on this.
For such little to cause a whole planet of life is amazing. To begin, learning about the notion that life could have come from another planet, via asteroid or meteoroid, astounded me, because I had always thought that Earth life started on Earth, not traveled here, as the article suggested. Next, I thought it was interesting how both RNA and proteins needed each other to make each other. Lastly, I thought it was cool that the molecules were recreated with HCN, H2S, and ultraviolet light! This article showed me a whole new perspective of the way that life came from the first bacteria all the way to modern plants and animals.
Wow. This article was amazing. I agree with Owen that this was definately an example of quality over quantity. It is certainly breaktaking that something you cannot even see with the naked eye can create something so large. Although this article gave a very clear and possible theory this will probably never be proved because it is such a hard topic to find evidence for. I found that this article was slightly hard to follower, however, I did retain a lot of very interesting information from it.
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