These include, the genetic code, the information-rich primary DNA code, the DNA polymerase required for replicating that code, RNA intermediates and the RNA polymerases required for transcribing the DNA, the mechanism of protein synthesis involving the ribosome, the transfer RNAs and the enzymes required to attach the correct amino acids to the correct transfer RNA, the cell membrane, and metabolic pathways required to generate the materials necessary for the above reactions involving hundreds of enzymes.Perhaps the first living cell did not have the capacity to carry out the activities of even the simplest modern living cell.THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries.Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. systems on a minute scale that are exceedingly complex.In addition, all living cells share a suite of common features that can be assumed to be fundamental to life.Evidence for a Reducing Atmosphere: largely because he, being a chemist, recognized that such a "reducing" atmosphere would be required chemically to produce the "hot dilute soup" from which he believed life originated.Being a chemist, he also recognized the necessity to exclude oxygen or oxidizing compounds from the mixture.
All phenomena are essentially unique and irreproducible.
It is the aim of the scientific method to seek to relate effect (observation) to cause through attempting to reproduce the effect by recreating the conditions under which it previously occurred.
The more complex the phenomenon, the greater the difficulty encountered by scientists in their investigation of it.
How Four components are essential to the story of the origin of life put forward by proponents of naturalism. An atmosphere full of reduced gas molecules and an energy source to convert these molecules into the biological precursors required for life. An ocean full of the small biological molecules that result. A mechanism to generate from this ocean of molecules the kinds of information-rich polymers necessary for a living cell. A belief that if step 3 can be implemented, it will result almost inevitably in the formation of a living cell. Chemical Evolution: independently suggested that life had originated spontaneously from non-living matter on the earths surface at some time in the distant past, and provided a scenario for its occurrence.
Since, at that time, the view prevailed that life was nothing more than complicated their ideas became widely accepted among those seeking to establish a naturalistic origin for life on the earth.