https://padlet.com/evanelson/abgj3am45gnm7bjw Hour 4 en-us 2021-09-20 14:26:17 UTC 2021-09-29 16:34:11 UTC hello@padlet.com https://padlet.net/icons/png/1f47e.png evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201409 We propose to [...] view life from a more global, statistical perspective. No single molecule of gas has a macroscopic property like temperature; temperature is meaningful only for a large population of molecules. Similarly, no single organism exhibits indefinitely ongoing life [...]. From a global perspective, only for a large population of molecules. Similarly, no single organism exhibits indefinitely ongoing life [...]. From a global perspective, only the complex web of interacting organisms - the entire biosphere - remains “alive” in the long run, through the continual cycle of birth and death of individual organisms. [...] An organism is alive only if it is a member of an actively evolving biosphere. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201409 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201413 Life is a self-Living matter is that which avoids the decay into equilibrium. The second law of thermodynamics says that entropy (disorder) always increases. Living things are highly ordered and seem to go against the second law of thermodynamics; however, they can only do this at the cost of increasing the entropy in the environment around them. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201413 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201415 Life is a self-replicating, evolving system based on organic chemistry. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201415 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201418 Life is first and foremost a microbial phenomenon. [...] Living things display complex organization [...] they carry out metabolism (energy generation in particular) reproduce their own kinds, and have functional parts adapted to their environment. [...] Life is a quality or attribute of entities that meet the criteria. They come in a vast range of shapes and sizes, from Escherichia coli to the blue whale, but the minimal units that meet all the criteria are microbial cells, both prokaryotic and eukaryotic. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201418 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201431 Life is an expected collectively self-organized property of catalytic polymers. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201431 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201434 Life can be recognized by what it does: living organisms create hallmark molecules and create chemical disequilibrium. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201434 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201440 Life [...] is defined as a network of inferior negative feedbacks (regulatory mechanisms [in the service of sustaining the identity of the individual - any deviation from some parameter sets in motion a series of steps to get back to the default value, like a thermostat]) subordinated to (being at service of) a superior positive feedback (potential of expansion [i.e. replication]). ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201440 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201442 Life is a self-sustained chemical system capable of undergoing Darwinian evolution. [Definition adopted by NASA]]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201442 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201447 Life is a material system that undergoes reproduction, mutation, and natural selection. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201447 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201448 Life is self-reproduction with variations. [Trifanov identified the commonalities in 150 definitions of life to get to this idea.]]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201448 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201450 There are seven pillars of life: a Program (an organized plan), Improvisation (a way to change the program), Compartmentalization (a means of separating self from the outside world), Energy (to fuel chemical reactions), Regeneration (to repair and replace itself), Adaptability (to respond to the environment), and Seclusion (to insulate chemical reactions from each other).]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201450 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201452 Living organisms are autopoetic systems. [In other words, they make more of themselves.]]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201452 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201456 Life is a property of form, not matter, a result of the organization of matter rather than something that inheres in the matter itself. Neither nucleotides nor amino acids nor any other carbon-chain molecule is alive - yet put them together in the right way, and the dynamic behavior that emerges out of their interactions is what we call life. It is effects, not things, upon which life is based - life is a kind of behavior, not a kind of stuff - and as such it is constituted of simpler behaviors, not simpler stuff. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201456 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201461 Living things are systems that tend to respond to changes in their environment, and inside themselves, in such a way as to promote their own continuation. ]]> 2021-09-20 14:26:17 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754201461 evanelson https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754915832 2021-09-20 18:03:27 UTC https://padlet.com/evanelson/abgj3am45gnm7bjw/wish/1754915832