ICTChris Posted January 11, 2021 Share Posted January 11, 2021 So much for the chilarit left 1 Quote Link to comment Share on other sites More sharing options...
Cyclizine Posted January 11, 2021 Share Posted January 11, 2021 3 hours ago, MixuFruit said: The one that always blows my mind a bit is that proteins have chirality, they're twisty and they can be twisty left or twisty right. All life on earth uses only the left-chirality versions. Why? I think it's probably because for RNA or DNA to "work" the sugar part of nucleotides has to be of uniform chirality, otherwise the spatial configuration won't be correct. This naturally selects out one isomer. Similar for the amino acids that make up peptides and proteins: any change in structure stops the protein doing what it's supposed to do, classically an enzyme can generally only deal with one isomer. I don't think there's any reason one structure has been favoured over the other, just chance. But I'm not a biochemist... 50 minutes ago, Fullerene said: I was also going to ask: Is this left chirality some sort of conspiracy? If so, can you explain further. Dredging up my undergraduate biochemistry from aeons ago, sugars are right-handed and amino acids left-handed. 1 Quote Link to comment Share on other sites More sharing options...
welshbairn Posted January 11, 2021 Share Posted January 11, 2021 1 minute ago, Cyclizine said: Dredging up my undergraduate biochemistry from aeons ago, sugars are right-handed and amino acids left-handed. Big teams revealed. 1 Quote Link to comment Share on other sites More sharing options...
Cyclizine Posted January 11, 2021 Share Posted January 11, 2021 1 minute ago, MixuFruit said: How mundane. It used to be on the list of unsolved biology problems but seems to be gone now. https://en.m.wikipedia.org/wiki/List_of_unsolved_problems_in_biology Going down the rabbit hole of Wikipedia... https://en.wikipedia.org/wiki/Homochirality 0 Quote Link to comment Share on other sites More sharing options...
Fullerene Posted January 11, 2021 Share Posted January 11, 2021 42 minutes ago, MixuFruit said: No we've just got sidetracked. Oh good. I was concerned that there might be left chirality deniers in America who believe it was all part of a devious plot to turn America into a socialist state. I can stop looking at pictures of those rioters in Washington to see if any were carrying a sign saying "Stop Left Chirality now." 0 Quote Link to comment Share on other sites More sharing options...
MuckleMoo Posted January 11, 2021 Share Posted January 11, 2021 New Covid relif bill in the US has some small print including thishttps://www.cnn.com/2021/01/10/us/ufo-report-emergency-relief-bill-trnd/index.html 0 Quote Link to comment Share on other sites More sharing options...
BFTD Posted January 12, 2021 Share Posted January 12, 2021 14 hours ago, Fullerene said: Oh good. I was concerned that there might be left chirality deniers in America who believe it was all part of a devious plot to turn America into a socialist state. I can stop looking at pictures of those rioters in Washington to see if any were carrying a sign saying "Stop Left Chirality now." If you're willing to put the work in online, I reckon you could make it happen by inauguration day. 0 Quote Link to comment Share on other sites More sharing options...
Detournement Posted January 26, 2021 Share Posted January 26, 2021 People just really liked giving Epstein hundreds of millions of dollars for no real reason..... 0 Quote Link to comment Share on other sites More sharing options...
Shandon Par Posted January 26, 2021 Share Posted January 26, 2021 10 minutes ago, Detournement said: People just really liked giving Epstein hundreds of millions of dollars for no real reason..... Why do you think Barry Hearn was in Epstein’s little black book? Shared hobbies? 0 Quote Link to comment Share on other sites More sharing options...
Detournement Posted January 26, 2021 Share Posted January 26, 2021 8 minutes ago, Shandön Par said: Why do you think Barry Hearn was in Epstein’s little black book? Shared hobbies? I doubt it. Barry Hearn probably moved in similar circles looking for rich idiots to grift. I don't see Epstein being very interested in the Arras, O's or Boxing. 0 Quote Link to comment Share on other sites More sharing options...
Detournement Posted January 26, 2021 Share Posted January 26, 2021 A good rant about the latest developments. 0 Quote Link to comment Share on other sites More sharing options...
RandomGuy. Posted January 26, 2021 Share Posted January 26, 2021 On 07/01/2021 at 23:45, welshbairn said: We've seen a fair bit of it but only as it was billions of years ago, and in no great detail. This always interests me about space, tbh. Read that Life began on earth 3.5 billion years ago, with "human intelligence" as we know it apparently first appearing 50,000 years ago. The universe is, at a google search, 13.8 billion years old. Presumably, down to mathy numbers, its almost impossible for us to actually see any intelligent life anywhere else in the Universe because we'll be looking too far back in time for it to have developed to the stage we're at? 0 Quote Link to comment Share on other sites More sharing options...
Fullerene Posted January 26, 2021 Share Posted January 26, 2021 58 minutes ago, RandomGuy. said: This always interests me about space, tbh. Read that Life began on earth 3.5 billion years ago, with "human intelligence" as we know it apparently first appearing 50,000 years ago. The universe is, at a google search, 13.8 billion years old. Presumably, down to mathy numbers, its almost impossible for us to actually see any intelligent life anywhere else in the Universe because we'll be looking too far back in time for it to have developed to the stage we're at? I don't understand your logic. Some of the nearest stars to us might have planets similar to Earth that started at a similar time and life might have started on those planets as well. That life might be just as intelligent as us or even more so. The big problem is that "nearest" star is still an unimaginable distance away. 0 Quote Link to comment Share on other sites More sharing options...
RandomGuy. Posted January 26, 2021 Share Posted January 26, 2021 10 minutes ago, Fullerene said: I don't understand your logic. Some of the nearest stars to us might have planets similar to Earth that started at a similar time and life might have started on those planets as well. That life might be just as intelligent as us or even more so. The big problem is that "nearest" star is still an unimaginable distance away. Always felt like an Earth like planet with life is out there, but chances are so low that we'll find a planet not only with life, but with "intelligent" life, it'll be so far away that we're never likely to know because we're looking into the past. Maybe got this all wrong, but when we look at the nearest galaxy (Andromeda), are we not seeing it as it was 2.5 million years ago? They could be looking at our planet right now saying its in a "habitable" zone, but the planet is covered in ice due to an Ice Age so they just move on to the next planet while "keeping an eye on that one". 0 Quote Link to comment Share on other sites More sharing options...
Fullerene Posted January 26, 2021 Share Posted January 26, 2021 8 minutes ago, RandomGuy. said: Always felt like an Earth like planet with life is out there, but chances are so low that we'll find a planet not only with life, but with "intelligent" life, it'll be so far away that we're never likely to know because we're looking into the past. Maybe got this all wrong, but when we look at the nearest galaxy (Andromeda), are we not seeing it as it was 2.5 million years ago? They could be looking at our planet right now saying its in a "habitable" zone, but the planet is covered in ice due to an Ice Age so they just move on to the next planet while "keeping an eye on that one". Never mind Andromeda. There are between 100 and 400 billion stars in the Milky Way. Some of them only a few light years away. Distance is the biggest problem. Voyager 1 is the furthest man made object from here and it is not even a light day away. The moon is 1.3 light seconds away and it took a mammoth effort to get there. 0 Quote Link to comment Share on other sites More sharing options...
RandomGuy. Posted January 26, 2021 Share Posted January 26, 2021 19 minutes ago, Fullerene said: Never mind Andromeda. There are between 100 and 400 billion stars in the Milky Way. Some of them only a few light years away. Distance is the biggest problem. Voyager 1 is the furthest man made object from here and it is not even a light day away. The moon is 1.3 light seconds away and it took a mammoth effort to get there. Yeah I think there's too much distance/time involved for us to ever actually prove there's intelligent life, at least on a par with us, out there. Reckon we'll hit a technological wall, then destroy ourselves, before it becomes feasible. 0 Quote Link to comment Share on other sites More sharing options...
BFTD Posted January 26, 2021 Share Posted January 26, 2021 Does believing that the universe was created 6,000 years ago count as a conspiracy theory? I'm never sure if they think scientists are lying, or just stupid. 0 Quote Link to comment Share on other sites More sharing options...
Shotgun Posted January 27, 2021 Share Posted January 27, 2021 (edited) 6 hours ago, BFTD said: Does believing that the universe was created 6,000 years ago count as a conspiracy theory? I'm never sure if they think scientists are lying, or just stupid. According to the fundie with whom I once shared an office, they’re lying. They use faulty computer models and have no qualms about changing the findings to obtain the results they want. Why? To make sure they continue to receive government funding of course. Yet despite all their efforts they STILL haven’t been able to disprove the existence of God. Your move scientists. Edited January 27, 2021 by Shotgun 0 Quote Link to comment Share on other sites More sharing options...
NotThePars Posted January 27, 2021 Share Posted January 27, 2021 To make sure they continue to receive government funding of course. Yet despite all their efforts they STILL haven’t been able to disprove the existence of God. Your move scientists. I think the Three Body Problem answered this question but deflected it on to aliens 0 Quote Link to comment Share on other sites More sharing options...
Detournement Posted January 27, 2021 Share Posted January 27, 2021 Imagine being the person who has to write this stuff. 0 Quote Link to comment Share on other sites More sharing options...
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