You didn’t learn in Biology 101 why animals are NOT nearly perfect spheres?

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December 23, 2019

Biology, Intelligent Design, Just For Fun

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Intelligent Design
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Don’t miss this opportunity to enlighten yourself, courtesy Rollin’ France:

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Bob O'H quips
Ah, I now think we can safely conclude that the intelligent designer wasn’t a physics student.
And yet we find that even Physics Professors at leading universities are in awe of the elegant physics that they are finding in life. For instance, William Bialek, Professor in Physics at Princeton University,,, " As one science writer put Bialek's findings, "Scientists have identified and mathematically anatomized an array of cases where optimization has left its fastidious mark,,,, In each instance, biophysicists have calculated, the system couldn’t get faster, more sensitive or more efficient without first relocating to an alternate universe with alternate physical constants."
William Bialek: More Perfect Than We Imagined - March 23, 2013 Excerpt: photoreceptor cells that carpet the retinal tissue of the eye and respond to light, are not just good or great or phabulous at their job. They are not merely exceptionally impressive by the standards of biology, with whatever slop and wiggle room the animate category implies. Photoreceptors operate at the outermost boundary allowed by the laws of physics, which means they are as good as they can be, period. Each one is designed to detect and respond to single photons of light — the smallest possible packages in which light comes wrapped. “Light is quantized, and you can’t count half a photon,” said William Bialek, a professor of physics and integrative genomics at Princeton University. “This is as far as it goes.” … Scientists have identified and mathematically anatomized an array of cases where optimization has left its fastidious mark, among them the superb efficiency with which bacterial cells will close in on a food source; the precision response in a fruit fly embryo to contouring molecules that help distinguish tail from head; and the way a shark can find its prey by measuring micro-fluxes of electricity in the water a tremulous millionth of a volt strong — which, as Douglas Fields observed in Scientific American, is like detecting an electrical field generated by a standard AA battery “with one pole dipped in the Long Island Sound and the other pole in waters of Jacksonville, Fla.” In each instance, biophysicists have calculated, the system couldn’t get faster, more sensitive or more efficient without first relocating to an alternate universe with alternate physical constants. http://darwins-god.blogspot.com/2013/03/william-bialek-more-perfect-than-we.html
And as the following recent 2019 article stated, “cells extract as much useful information from their complex surroundings as is theoretically possible.,,, when researchers have been able to appropriately determine what cells are doing, many have been surprised to see clear indications of optimization.,,,”
The Math That Tells Cells What They Are - March 13, 2019 Excerpt: It’s now known that some form of positional information makes genes variously switch on and off throughout the embryo, giving cells distinct identities based on their location.,,, That mounting evidence is leading some biologists to a bold hypothesis: that where information is concerned, cells might often find solutions to life’s challenges that are not just good but optimal — that cells extract as much useful information from their complex surroundings as is theoretically possible.,,, when researchers have been able to appropriately determine what cells are doing, many have been surprised to see clear indications of optimization.,,, “I don’t think optimization is an aesthetic or philosophical idea. It’s a very concrete idea,” Bialek said.,,, https://www.quantamagazine.org/the-math-that-tells-cells-what-they-are-20190313/
Moreover, as the following article states, “There are a surprisingly limited number of ways a network could be constructed to perform perfect adaptation.”,,, Moreover, the "amazing and surprising" outcome of the study is applicable to any living organism or biochemical network of any size.,,,”
Math sheds light on how living cells 'think' - May 2, 2018 Excerpt: "Proteins form unfathomably complex networks of chemical reactions that allow cells to communicate and to 'think' --,,, "We could never hope to measure the full complexity of cellular networks -- the networks are simply too large and interconnected and their component proteins are too variable. "But mathematics provides a tool that allows us to explore how these networks might be constructed in order to perform as they do.,,, Dr Araujo's work has focused on the widely observed function called perfect adaptation -- the ability of a network to reset itself after it has been exposed to a new stimulus. "An example of perfect adaptation is our sense of smell," she said. "When exposed to an odour we will smell it initially but after a while it seems to us that the odour has disappeared, even though the chemical, the stimulus, is still present. "Our sense of smell has exhibited perfect adaptation. This process allows it to remain sensitive to further changes in our environment so that we can detect both very faint and very strong odours. "This kind of adaptation is essentially what takes place inside living cells all the time. Cells are exposed to signals -- hormones, growth factors, and other chemicals -- and their proteins will tend to react and respond initially, but then settle down to pre-stimulus levels of activity even though the stimulus is still there. "I studied all the possible ways a network can be constructed and found that to be capable of this perfect adaptation in a robust way, a network has to satisfy an extremely rigid set of mathematical principles. There are a surprisingly limited number of ways a network could be constructed to perform perfect adaptation.,,, Professor Lance Liotta, said the "amazing and surprising" outcome of Dr Araujo's study is applicable to any living organism or biochemical network of any size.,,, https://www.sciencedaily.com/releases/2018/05/180502094636.htm
And as the following article stated, “These findings suggest an entirely new and universal mechanism of conductance in biology very different from the one used in electrical circuits.”,,, “what exactly is the advantage that criticality confers?”
Quantum criticality in a wide range of important biomolecules – March 2015 Excerpt: “Most of the molecules taking part actively in biochemical processes are tuned exactly to the transition point and are critical conductors,” they say. That’s a discovery that is as important as it is unexpected. “These findings suggest an entirely new and universal mechanism of conductance in biology very different from the one used in electrical circuits.” The permutations of possible energy levels of biomolecules is huge so the possibility of finding even one that is in the quantum critical state by accident is mind-bogglingly small and, to all intents and purposes, impossible.,, of the order of 10^-50 of possible small biomolecules and even less for proteins,”,,, “what exactly is the advantage that criticality confers?” https://medium.com/the-physics-arxiv-blog/the-origin-of-life-and-the-hidden-role-of-quantum-criticality-ca4707924552
Thus, not only is the Intelligent Designer NOT a physics student, but the Intelligent Designer is apparently TEACHING brand new applications of physics to scientists and university professors.bornagain77_{December 23, 2019
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All I know is that if I eat any more over Christmas, I run the risk of becoming a perfect sphere.Ed George_{December 23, 2019
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Bob O'H at 1: Yes, a physics student could be that dumb about biology. A farmer not so much. Incidentally, a horrifying short story by Victor Hugo deals with this exact theme except that it is what really happens when cannons get loose on the deck of a tossing ship: “This is the most dangerous accident that can possibly take place on shipboard.”News_{December 23, 2019
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Ah, I now think we can safely conclude that the intelligent designer wasn't a physics student.Bob O'H_{December 23, 2019
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