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Organometallic hydride hydrogen carriers. Just as we have organometallic carriers of oxygen in our own biological systems (hemoglobin with the iron containing heme ring), in a world where hydrogen is energy your creatures will have organometallic metal hydrides. From The Power of Hydrides Image cropped by me to emphasize biological organometal hydrides. ...


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I don't know why it took me this long to realize the answer, but it turns out I need to frame challenge myself: When hydrogen is lost to space, there will be nitrogen left behind in the atmosphere As a result, it doesn't actually matter if the reaction cycle that photosynthesizers use to produce carbohydrate-analogs releases hydrogen--because any hydrogen ...


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We have both righthand and lefthand gloves to go on the respective hands. If your creature uses both, because of the issue of fitting together like the glove, it would probably be an obligate user of both. It could not simply slot a right-handed molecule into a left-handed process. This is imaginable but not more efficient.


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The reason why chirality is a thing in living organisms is because amino acids and sugars and so are made by enzymes and other such bits of biochemical machinery in cells, and those have chirality too. Thus they would assemble molecules preserving their chirality - which includes the next generation of cells. Since all living things have a common ancestor, ...


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Evolution has a long way to go @Ender_look gave a good review of some basic enhancements, but evolution has a long way to go. So let's keep fiddling with it... Proper respiratory system The birds are a fair start, but they still ultimately inhale and exhale through the same pipe, starting at the pharynx for ingesting food because fish originally gulped down ...


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Yes, given appropriate "circumstances", it could be the case. This subject has been "entertained" in research and, in fact, relatively recently. The link points to an article (official scholarly reference here), which describes how scientists managed to slightly manipulate an enzyme from an extremophile bacterium and inject it into E. ...


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Actually, carbon and silicon can and do react with each other to form useful compounds, for example Carborundum and Silicones. The former would probably be a good material for teeth (or skin scales or anything like that) and the latter could be used as analogues of blood, fatty tissue and for covering the bending parts of the limbs of your creatures. So it ...


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Vitamins The silicon based organisms cannot survive by eating organics but organics carry trace elements that might be energy intensive to sift out of raw rock. Thus, they often eat organics to gain a low cost source of those trace elements. Getting High Humans (and some other animals in Earth) often eat poisonous compounds to get high. Organics may be ...


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Silicon bodies, carbon energetics. from my answer here: How could a pathogen feed on silicon while infecting humans? Your opal creature uses silicon for its body, but has conventional carbon energetics. When we eat, we use our food for two things. We metabolize some for energy and we use some for anabolic processes - building our bodies There are creatures ...


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Different Nutrients: This is implausible, since it's enzymatically unfavorable for a silicon organism to evolve enzymes to break down carbon organisms. After all, all the organic parts are immediately unusable for materials. But with a little manipulation, there could be benefits. There would also be large numbers of compounds in organics that would be ...


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Depends on what you mean by 'eat', and what you mean by 'life forms'. Silicon-based life could mean robots or otherwise mechanical creatures, they could take in the carbon-based items and burn it for fuel/energy. It's probably not going to be an efficient form of energy extraction unless they're built to harvest the joules that way, but it's certainly an ...


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In general, as L.Dutch wrote, a silicon based lifeform will typically be unable to process carbon-based foods. But since this is Worldbuilding, and you might need a different answer for your story purposes, let's look into ways to make it possible. A hint in advance: I'm not a biologist. So I may be horribly wrong in what follows. Our bodies, and those of ...


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Most likely not, in the same way no life form on Earth can extract nutrients from eating silicon based compounds. The closest thing I can call out of my mind is chicken eating stones to help them break food in their stomach and to get elements for the egg shell. But that's not made of silicon. Moreover, a silicon based life form would be adapted to process ...


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Ceramics are incredibly strong and hard but are not very tough (i.e. they initiate cracks easily), and are brittle with graceless failure, as the cracks propagate easily from the crack tip right through the ceramic. So a ceramic is only as tough as its weakest point that experiences any sudden force; it's all about preventing a crack beginning in the first ...


1

I propose energy metabolism and anabolic metabolism are separate things in these creatures. Energy. Photosynthesizers will split H2SO4 into H2O and SO3. The desired product is the water; SO3 is waste. The creatures will keep the water in their siloxane bodies. On this planet, water is energy. Energy can be reclaimed by reuniting H2O and ideally SO3. If ...


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The article On the Potential of Silicon as a Building Block for Life, published just last year, while not directly answering this question, provides a lot of useful information for making progress on it! In particular, it turns out that silicon actually has more diverse stable chemistry in sulfuric acid than it does in aqueous solutions (although not as many ...


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Sulfur seems to be the key, though not quite in the way Willk has suggested. However, carbon monosulfide (CS) and thioformaldehyde (H2CS) are both very happy to form polymers and metal complexes--perfect for a biochemical system which is largely based on metal-containing coordination polymers anyway! That means that, if there is hydrogen sulfide available to ...


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$\color{yellow}{\textrm{Sulfur to the rescue!}}$ https://www.nationalgeographic.org/encyclopedia/core/ Another key element in Earth’s core is sulfur—in fact 90% of the sulfur on Earth is found in the core. The confirmed discovery of such vast amounts of sulfur helped explain a geologic mystery: If the core was primarily NiFe, why wasn’t it heavier? ...


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More building of the formamide world! Here is your prior question. How could formamide lakes form on an exoplanet? Part of my answer: Thinking about why life forms would synthesize form amide - it is easy. The energy. https://webbook.nist.gov/cgi/cbook.cgi?ID=C75127&Mask=1E9F When these life forms catch a CO and hook it to ambient NH3 they get a ...


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In vitro expansion. https://www.thermofisher.com/us/en/home/life-science/cell-analysis/cell-analysis-learning-center/cell-analysis-resource-library/cell-analysis-application-notes/cell-culture-quality-control-during-t-cell-expansion.html Here we describe methods for isolation of T cells from blood followed by activation and expansion using Invitrogen ...


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Unlikely It may be possible for the vampire to make a proper tissue culture lab at his estate. But unless he is personally an expert in this field willing to take substantial time on the task, he has to staff it with people who have a pretty good chance to guess his secret. More to the point, since he's actually going to consume and use these things, he ...


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However, feeding off of actual humans is hard [citation needed]. Some people buy eggs from the grocery store, some other keep chicken in their garden and have fresh eggs every day. You don't need to go hunting for a fresh meal every day if you can afford having about 30 humans at your service who, in exchange for a roof, food and some benefits, will let you ...


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A subdermis faraday cage Trougth subdermical implant that goes for the enterity of the skin of some very conducting grid of wire, would be anough to make a faraday cage that would shield against electric charges. Then you just need some terminal/contact to ground in the foots. Faraday Cage protecting from electric shoot. source This feels very devilish


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