A Mesophilic Origin of Life Essay -- Biology Essays Research Papers

A Mesophilic Origin of Life Nearly all scientists agree that life on Earth began billions of years ago. Most will also agree that ribonucleic acid appe bed first and found a way to replicate itself, an essential cadence in the early stages of life. Without this ability of ribonucleic acid, only short pieces of DNA could be copied and no enzymes could be created to copy longer strands which would be necessary for the fundamental law of enzymes1. Beyond that, there is very little agreement about the inventory of life, including what the original source of all life was like. This has led to a strong amount of debating with very few answers. Scientists are still debating how life originated was it a series of successive steps or a spontaneous accumulation of the necessary materials? The problem with the second theory is that the odds of this happening are about the same as a tornado assembling a 747 aircraft in a junkyard.2As of now, we still hand over to ponder whether the ancestor of all life, or LUCA, was a single being or a community of organisms sharing genes. A nonher question entails whether the last universal rough-cut ancestor (LUCA) dwelled in a hot-water environment or a tank car place, possibly near the surface of the ocean. The experts are split almost every bit on this question and both aligns present convincing evidence for their side of the argument, but we will focus primarily on the side that believes that LUCA was not thermophilic, and, in fact, lived in a cooler surrounding. This cooler surrounding would get down likely been near the surface of the ocean rather than in the neck of the woods of a thermal vent near the oceans floor.The some other side argues that Earth was warmer 3.5 billion years ago, when life is believed to have been spawned. This, c... ...more evidence, especially in RNA sequences, until an answer can be established. 1 Smith, Szathmary 19992 DeDuve, 19913 Whitfield, 20044 Levy, Miller, 19985 Vogel, 199 96 Brochier, Phillippe, 2002 whole shebang CitedBrochier, C., and H. Philippe. 2002. A non-hyperthermophilic ancestor for Bacteria. reputation 417244.DeDuve, Christian. 1991. Blueprint for a Cell The Nature and Origin of Life 100-105.Levy, M., and S.L. Miller. 1999. The prebiotic synthesis of modified purines and their potential role the RNA world. Journal of Molecular Evolution 48631-637.Smith, John Maynard., and Szathmary, Eros. 1999. The Origins of Life From pedigree to the Origins of Language 1-14.Vogel, G. 1999. RNA study suggests cool cradle of life. Science 283 155-156.Whitfield, J. 2004. innate(p) in a watery commune. Nature 427674-676.