It’s an amazing thing that cells are designed to use physics or otherwise we would not be able to exist. Two papers (here and here) were published in PNAS not long ago. Harland, Bradley, and Parthasaranthy studied the forces working in cell membranes. Lipid bilayers provide the structural framework which gives the cell membranes movement. It was previously believed that simple Newtonian fluids were able to keep them intact.
But researchers have found evidence to the contrary…“we find that membranes are not simply viscous but rather exhibit viscoelasticity…” which is a type of deformation which exhibits the mechanical characteristics of viscous flow and elastic deformation. The membrane is stretchy and it requires something to pull it apart. “The fluidity of membranes is crucial to functions such as the assembly of proteins into signaling complexes and the controlled presentation of macromolecules at cell surfaces…”
In other words, we could not live without membranes that are designed on how to take advantage of viscoelastic properties. Last September, UC Davis studied quantum mechanics – the Complex I macromolecular complex which was recently discovered machinery that resembles intelligently man-made in having a railroad-like piston and coupling-rod mechanism. The piston creates a proton gradient which then drives the ATP synthesis. It requires energy from food and stores it as chemical energy in ATP molecules for energetic activities in the cell. From humans to one-cell animals like bacteria, this is a vital important process for the existence of life!
Hayashi and Stuchebrukhov discovered that Complex I takes advantage of electron tunneling – a phenomenon in quantum mechanics…
“The whole electronic wiring of complex I is obtained by combining tunneling pathways of individual processes, as shown in Fig. 3. It is clear that specific peptide residues serve as electronic wires connecting neighboring Fe/S clusters; individual electron tunneling paths involve up to three protein residues, including two cysteine ligands and one additional key residue (Table 1). Notably, the clusters in the protein are oriented in a specific way—corner to corner—with Cys [cysteine, an amino acid] ligands mostly pointing toward each other, which is clearly the most efficient way to transfer electrons from one cluster to another.”
Did scientists drag into this incredible discovery the evolutionary story to remind us that this came from a non-thinking process? Well, they did decide to show it could not happen by observing what happened with mutants when they tested them and then came out with this conclusion…
“The key residues identified in this study as mediators of electron transfer (Table 1) are remarkably conserved among different organisms.”
These cells are designed with precision of these machines. The efficiency of electron transfer in Complex I , for example, it depends on precisely-placed amino acids and water molecules down a fairly long chain. The fact is these amino acids are unevolved which means altering them would cause major problems including causing death. Creationists and evolutionists recognize mutations as a process that occurs but genetic drift and stabilizing selection are level or downhill processes.