May
Life on Earth
Each living cell, even the simplest bacterium is full of molecular contraptions that would be the envy of any Nanotechnologist. As they constantly agitate or spin or crawl around the cell, these machines to cut, paste and copy DNA molecules, nutrients shuttle around or turn them into energy, construction and repair of cell membranes, the mechanical relays , chemical or electrical messages to the list goes on and on, and add new discoveries all the time. It is virtually impossible to imagine how the machinery of a cell, which are mostly based catalysts of proteins called enzymes, could have formed spontaneously as the first life arose from nonliving matter around 3.7 billion ‘years.
Of course, under appropriate conditions, some building blocks of proteins, amino acids, in a form that is easy to simple chemicals such as Stanley L. Miller and Harold Yura University of Chicago, discovered in pioneering experiments in 1950. But going out on the proteins and enzymes, is another question. Proteins of cellular process involves removing the enzyme complex strands of the double helix of DNA, to collect information that is contained in the genes (proteins plan) and translate it into finished products.