Questions tagged [biochemistry]

For questions regarding the chemistry of living organisms.

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1answer
74 views

How could hydrogen in a vacuum be removed/extracted?

What reactions or process could remove hydrogen from the vacuum without compromising it, then from there a way that animals could do it, the vacuum is in a rigid space, but hydrogen still seeps ...
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1answer
213 views

how could a creature have a vacuum chamber inside its body

i want to know how an animal could have a vacuum inside itself (in an organ), survive, and also for it to be stable, what materials could be used to contain it, and how could it be implemented without ...
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1answer
1k views

What problems will a person with purple blood (hemerithrin instead of hemoglobin) have?

Hemerythrin is an oligomeric iron-containing protein of the metalloprotein class found in the blood of some invertebrates. Able to reversibly bind with oxygen, ensuring its transfer to tissues. ...
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2answers
133 views

Photosynthetic life using gamma radiation

Okay, so I have a planet that gets from its star a solar flux of 1360 W/m^2. The catch? As the star is powered by matter-antimatter reactions, it's predominantly, if not entirely, gamma rays. There is ...
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1answer
95 views

How do you show and not tell alien biochemistry? [closed]

Let's say you were thinking of making a docufiction about alien life and you wanted to do a segment or two about alien life with radically different biochemistry, such as being based on silicon ...
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0answers
74 views

Changing the biochemical structure of a living thing

Kaitlyn, protagonist of my series “The Vault”, has a very interesting ability, among her vast set of abilities. She can change her biochemical structure to survive Antarctic cold and volcanic heat, ...
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2answers
374 views

Would it be possible for a self healing castle to work/function with the "healing" bacteria used in concrete roads?

This idea is mainly based around the self-healing concrete idea that has appeared in the past and scientific posts have been made about the self healing concrete using bacteria to self heal cracks. ...
5
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2answers
234 views

Can silver affect blood or bone color?

A race I’m developing has grey skin due to silver buildup similar to Argyria. I was wondering if Argyria affects the blood or bone color.
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1answer
257 views

Modifying muscles to be more bullet resistant without affecting strength?

So, if we were to treat realistic creature design like making a pokémon card, one of the obvious "types" would be volant (flight-capable) creatures, and their biggest downside would be the ...
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2answers
122 views

What needs to be changed in the structure of the human body in order not to get poisoned with raw Fugu fish?

The most poisonous fish in the world is the so-called puffer. Its liver and other parts of the body contain a substance called tetrodotoxin, which is capable of paralyzing the respiratory muscles of ...
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2answers
188 views

How should the human respiratory system be changed to be able, in addition to oxygen, to breathe chlorine or hydrogen sulfide?

According to the plot of my story, terraforming earth-like planets turned out to be an incredibly difficult task and exact copies of the Earth with an atmosphere of oxygen are rare, so it was decided ...
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1answer
187 views

Is it possible to determine the colour of a molecule?

Is there a way to determine the colour and appearance of a large biomolecule? If no one had seen chlorophyll, simply knew of its existence, would you, from its formula, be able to determine that it ...
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1answer
95 views

How to make ammonia-resistant organisms through their biochemistry?

Its a very simple question really, yet the answers are obviously complex (like everything in biochemistry) how do I allow my organisms to tolerate ammonia yet still be carbon based by altering their ...
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2answers
327 views

Where to begin when designing functioning alternative biochemistry for alien organisms in non-earthlike conditions?

I am building a habitable terrestrial 'super-earth' type planet. Ideally, my lifeforms should be primarily carbon-based and their biochemistry relatively similar to Terran biochemistry, but with ...
9
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1answer
266 views

What blood pigment type is immune to ammonia poisoning?

I am designing a world in which the biological solvent is an ammonia-water mixture and need help finding out which blood pigments (Hemoglobin, Hemocyanin etc.) would be immune to the negative effects ...
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2answers
163 views

Gardening in an Alien Biosphere

Take a world with the same physical characteristics as Earth, but where biochemical development has "rolled the dice" differently in some cases. The simple chemistry are the same compounds ...
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4answers
242 views

Are dead tissues easier to preserve for extended period of time compared to living organisms?

When I asked about food preservation for 2-3 centuries, some commenters insisted that if I have technologies to preserve living humans for that long I should have no problems preserving food (with ...
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2answers
115 views

Consequences of magic allowing biochemistry to happen at range

I have a mage who's trying to connect his "life force" to another person's in order to magically heal them. Mechanically, this happens by the mage allowing his patient's body's biomolecules ...
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2answers
302 views

A stronger replacement for calcium carbonate in super-strong scales?

So, the microstructure of abalone shells is 95% calcium carbonate, such as aragonite, tiles and 5% organic polymer that binds them together. This binding fails in a graceful manner, allowing the shell ...
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1answer
160 views

(Survival-Type Situation) How can I Craft a Powerful Sedative From Easy To Find/Gather Materials, Assuming No Meds in Clinics or Hospitals?

I have a character that finds himself in a decent-sized town that has already been ransacked, what can I use to craft sedatives that would be effective on both Zombies, (assuming their anatomy ...
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1answer
103 views

What drug could interfere with a chip hooked into your nervous system?

Say a character had a chip implanted within their brain (thank you to everyone who helped with that question) and wanted a drug to try and mess with the chip's ability to hook into their senses and ...
5
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2answers
151 views

obsidian/flint like substance of organic origin

Could a species that naturally produces an obsidian/flint like material exist ? Or to put it more accurately could an obsidian/flint like material that is purely of biological origin (and not the ...
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6answers
3k views

Organism that can produce water on its own (possibly from air?) not requiring a water source. Is it plausible and if how?

I have thought of a sort of desert planet that has a atmosphere pretty similar to earth and with gravity a little lower which has little to no water source and most of it is empty dry wastelands. I ...
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3answers
186 views

Modifying horses to be able to digest a broader variety of plant material. How?

"I defy anyone to tell me they have a pasture with zero poisonous plants," said Dr.J. "Then I reject your reality and substitute my own!" shouted Dr.[Redacted]. So, I wanted to ...
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11answers
3k views

What could substitute coffee in a modern post-apocalyptic society?

Context is the same as in a previous question. Summing up: a rebuilt, ultra-modern city state after an apocalypse where everything's produced in underground farms, and as such, certain commodities are ...
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3answers
848 views

Can organic life naturally produce a lightweight substance (relatively) impermeable to a lifting gas?

Apparently the Biology stack doesn't like theoreticals. :P I'm looking into the sci-fi trope of floating plants via some sort of equivalent of a kelp's pneumatocysts, and the biggest issue to ...
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2answers
262 views

Different human-survivable universes

If humans had the ability to physically travel to a universe similar to our own, how different could its fundamental constants be and still allow humans and other terran life to survive there long-...
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1answer
125 views

Can phosphates be replaced?

Phosphorus is central to all life on Earth, being a critical component of DNA, cell membranes, and metabolic systems (via ADP/ATP). However, it's not really all that common, especially compared to the ...
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8answers
2k views

With as much scientific accuracy as possible, how would chemicals injected in one's body be removed?

I am currently writing the world, setting and characters for a project of mine called the ORION Project - a story set in a dystopian America in the near future of 2050, where the government has taken ...
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2answers
149 views

Entropy, enthalpy, and energy through rapid mitosis

So I'm pretty new to chemistry and all this, but my world involves superpowers, which of course involves immense energy to have the characters use these powers. However, I want to stay consistent with ...
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3answers
159 views

Could an animal evolve iridescent horns that appear metallic like chrysina resplendens' chitinous exoskeletons?

Sort of two questions here, but very related. One about whether a mammal-like animal could evolve to have a chitinous endoskeleton, I guess. Then a question of whether, if they grow horns, that ...
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4answers
664 views

Would Chemosynthetic plants have any reason to grow tall?

I have a planet too far away from its sun for photosynthesis to work well, so the plants use chemosynthesis. But since they don't use sunlight, would they have any reason to grow above ground? Some ...
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1answer
101 views

Can mercury compounds be used in chemosynthesis?

While watching Biblaridion's Alien Biosphere series, an interesting point came up: in Biblaridion's fictional world, atmospheric hydrogen sulfide is used as an energy source for chemosynthetic ...
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2answers
371 views

Exploring a world with chiral biochemistry: chirality detection

Space explorers have landed on an Earth like planet and, to their surprise, the place is luscious and covered in life, to the point of resembling some earthly tropical atoll. What they don't know yet ...
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2answers
163 views

What are the realistic limits of human drug enhancement? [closed]

Assuming fairly plausible technologies, what is the most fairly simple drugs could do? In The Expanse there is a focus drug used by a Martian interrogator that allows him to be better at reading ...
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1answer
78 views

Implementing cryptobiosis into larger animals [closed]

We live in a game, called TierZoo, the game sports incredible graphics and hundreds upon thousands of active and passive skills. One of the most powerful and coveted abilities is Cryptobiosis, ...
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2answers
191 views

How could medical petrification work?

So, turning people into stone. You only have to add reversibility to the mix, and it becomes the BEST paramedical tool available. But, what does petrification need to accomplish to become just that? ...
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3answers
137 views

How do my plants trap so much carbon?

The boom-bust cycle answer I took for my question: Sustainability of Regular Global Wildfires due to Oxygen Rich Atmosphere pends on the atmosphere being rich in oxygen but poor in CO2. I, however, ...
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4answers
145 views

Designing an alien spore that's deadly to humans with the ability to wipe out billions [closed]

I'm working on creating a post-apocalyptic world brought on by a deadly alien organism. The organism by itself is not that threatening - it's pretty much a small lump of slime with legs. However, it ...
3
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1answer
169 views

Scaling up the bombardier beetle's chemical weapon. What would change?

There are two common quirks I keep hearing about dragon anatomy and biochemistry. The first is that dragons use lifting gases to keep aloft and breathe fire, both of which are just plain dumb. First, ...
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3answers
328 views

Werewolves and sense of smell, what is reasonable for them to accomplish with it?

I was thinking of a story with a Werewolf as a detective, using mostly conversational skills and his sense of smell to solve crimes similar to many of the UK types of detective stories (Morse, Lewis, ...
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1answer
110 views

How to make a bombardier beetle's chemical weapon more potent?

So, just an idea pitch. The bombardier beetle utilizes the reaction of two chemicals to create a nearly 100 °C liquid that's sprayed in the face of its enemies. How that doesn't damage the beetle? I ...
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1answer
249 views

Feasibility of a bone exoskeleton

First time posting here but I would like to get some help with an issue I have. I have a planet that has 30% more gravity than earth. I have terrestrial animals with an exoskeleton, they stand at a ...
5
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3answers
591 views

A sound reason for vampires to be weak to sunlight?

So, vampires here are created from humans with the help of a stone mask. Now, they're supposed to be weak for two things: Having their brains destroyed Prolonged exposure to sunlight The first is ...
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3answers
925 views

Alternatives to amino acids

Amino acids, the building blocks of proteins and, therefore, one of the key components of life as we know it. There are many amino acids in nature, but they all stem from the same basic structure. ...
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2answers
338 views

Could spasmoneme muscles be useful for a living creature?

I got an interesting answer to one of my questions and I would like to know some additional info. A myoneme (or spasmoneme) is a contractile structure found in some eukaryotic single-celled ...
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1answer
157 views

What chemicals or modifications are need for a biological creature to be able to develop as natural/organic suicide bomb?

So in my world there’s a creature as big as a common rodent or as big as a rabbit in size. They live in packs, usually burrowed, but occasionally come to surface to get food. The alpha male is tasked ...
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2answers
127 views

How could space life deal with the cold?

I am workin on an ecosystem based on life within the rings of a planet. I will create creatures from single celled organisms, to algae/ lichen, plankton/worms and scales of predators leading to large ...
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2answers
163 views

Relentless Super marathon?

Humans are not the fastest mammals on the planet, but for very long distances (more than 40 kilometers) we can overtake any species living on land. Except some dogs. The best runners on ultra-long ...
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1answer
120 views

Atmospheric isopropyl alcohol

Could a measurable amount of isopropyl alcohol occur naturally in an otherwise reasonably earth-like atmosphere? And if so, what is the highest possible concentration that a human could survive long-...

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