Teleological
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One thing unique to enzymes is that they are unique to their substrate and the reaction they are catalyzing.Firstly: Get the Definition of Enzyme
In other words enzymes merely function as catalysts of reactions which would have already happened but are merely happening faster due to the catalytic effect.
They are if you want to catalyze certain reactions above others. Enzymes are selective catalysts. A huge number of possible reactions are possible even with relatively simple carbon molecules and there is no rule that dictates that will result in the preferential formation of the subset of compounds needed for life with non-selective catalysts.Enzymes are thus not crucial to any kind of evolution of organic molecules.
Protein enzymes do not exist freely and abundantly in the universe as far as science knows, only speculation. Proteins are not created easily in nature, unless they are made in cells. Proteins breaks down easier in water than being built up.Secondly: Enzymes are Proteins but can also be other chemical molecules. Thus enzymes exist freely and abundantly in the universe deduced from the fact that proteins can be created naturally and that chemical molecules which can serve as catalysts can also be found throughout the universe.
Time provides no explanatory mechanism. Ask Trevors and Abel.Or "imo" is noted, and put where it should be.
Trevors JT, Abel DL. Chance and necessity do not explain the origin of life. Cell Biol Int. 2004;28(11):729-39.
http://en.wikipedia.org/wiki/Origin_of_life
There is some good reading for Teleological and the rest of you guys.
Besides the Miller Experiment in which we yielded some complicated Organic Molecules here are some other aspects on the topic.
Fox's experiments did not use plausible starting material (pure amino acids). Read up a bit more on his particular experiments and what his results actually showed.Fox's experiments
A combination of the RNA world and metabolism first world and scientists have not found a plausible prebiotic synthesis scenario of any molecule that can give rise to other molecules that are capable to catalyze the synthesis of molecules of its own kind. This phenomenon has never been observed in nature or even in the most ingenious laboratory condition.Eigen's hypothesis
Wächtershäuser is pushing for the metabolism first scenario. Leslie Orgel was very critical of these proposed hypotheses in his last published article. The Implausibility of Metabolic Cycles on the Prebiotic EarthWächtershäuser's hypothesis
Observable evolution yes. The notion that life came from non-life through SDL and selection is just interesting and does not contribute to Medicine. The philosophical notion of junk DNA looks like it is stifling science progress.Evolution always wins because it makes more sense and because it is more satisfying as it regularly provides us with more insight into many aspects of Medicine and science which results in cures, treatments and other advances.
Bacteria turning into other organisms? Would be nice to have a testable example... The interpretations of the Miller experiments were wildly exaggerated.The Evolution of Inorganic Molecules to Organic Molecules to Bacteria to other Organisms and to Life as we know it is very fascinating really. And if you knew anything about science back in the day you would realise what a massive impact Miller's experiments had on Science and man's perception of the world.
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