Questions tagged [biology]

For questions about living things. Does not exclude aliens, but additional information is usually necessary (consider using "xenobiology" instead).

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7answers
1k views

How can biological immortality lead to an increasing number of stillbirths?

The society of an island nation is led by a religion known as "The Church of the Eternal Mother", it is an ancient faith that adheres to a fertility goddess. This faith is led by five ...
5
votes
3answers
109 views

What would cause a race of elves to have grey skin?

My elves live in a rocky desert and they all have a light greyish/almost kinda bluish looking skin color. Their skin is rough and almost chapped in texture, and it scars really easily. Are there any ...
3
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1answer
97 views

Best shape and location of a piezoelectric plant?

Members of the electric bacteria (Shewanella) genus possess capabilities allowing the use of a variety of other electron acceptors for respiration. These include thiosulfate, sulfite, or elemental ...
1
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5answers
1k views

Can my humanoid species function without the necessary organs used for eating and swallowing?

I won't go too much into detail because I'm still trying to figure things out but my humanoid species lack organs used for eating and swallowing (because they're not required to eat). Here's the list ...
5
votes
1answer
94 views

Could any Earth-based species survive on a supermassive terrestrial planet?

In the far future, a fleet of human settlers arrives in a star system containing an unusual planet; 90 times the mass of Earth, with only 3 times the radius. Rocky planets with similar mass are known ...
2
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3answers
362 views

Insectoid creature that changes from solid to liquid and vice versa, how would this be possible?

I was thinking about the concept of a little relatively simple creature with a maximum size of a few centimeters such as some beetles but with an "intelligence" similar to ants, with the ...
2
votes
2answers
117 views

How far would radiation from an exclusion zone spread?

I'm working on a story where in 1983 the world went to full on global war and all nuclear power plants blew up either under nuclear fire or by losing power. I know about the general 30km exclusion ...
4
votes
3answers
193 views

Via what mechanism could a humanoid entity regrow multiple sets of teeth throughout its life?

I am not asking what the consequences of this would be, nor what kind of humanoid entity might evolve such a thing - simply how it would be possible.
3
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1answer
71 views

Flight drag and the superior limit size for hexapod dragons?

For what I know birds have an much lower superior size limit for flying forms than pterosaurs because they use two different groups of muscles to locomotion, wings for fly and legs for walk in ...
4
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3answers
165 views

Evolution of Interior Life

"Interior Life? What's that?" Quite simply, it is life that lives inside something else. As far as I know, interior life is limited to microrganisms (bacteria like E. coli) or parasites (...
4
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2answers
173 views

What are some biological non-Newtonian fluids that can be used as shock absorbers?

A non-Newtonian fluid is a fluid that does not follow Newton's law of viscosity, i.e., constant viscosity independent of stress. In non-Newtonian fluids, viscosity can change when under force to ...
3
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3answers
702 views

A reality check on blood viscosity decreasing under high temperature

Is blood that decreases in viscosity as it increases in temperature plausible? It's supposed to be a biomodification that decreases the amount of energy the heart needs to put in during strenuous ...
2
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1answer
111 views

What are some substances that paralyze voluntary muscles in the human body but not involuntary ones, and do not cause any harmful side effects?

The title says it all. I'm not looking for things like curare, where it shuts down the lungs - I need something that basically turns people into ragdolls but otherwise leaves them unharmed. If such a ...
3
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2answers
54 views

How much energy would a hypothetical organism require to regenerate mild to semi-moderate trauma via pluripotent stem cells?

So, we have this heavily-altered human that can regenerate from stem cells. Let's say that they suffer a "flesh wound" - in this case, let's say an ugly stab wound through the hand with a ...
3
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3answers
387 views

“Refolding” muscle proteins [closed]

How does this concept check out?. A genetically-altered (i.e. raised from birth) human with muscle proteins that have been developed, "folded" (i.e. the way muscle fibers interact with one ...
-1
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0answers
37 views

What are solutions to the scaling problems created by big organisms (or scaling them up) for the purpose of making them biologically similar to humans [closed]

I can think of a few off the top of my head: Is the nervous system too large? add multiple brains or clusters of neurons that control individual body parts/limbs instead of the organism having ...
3
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1answer
104 views

What are some common, metabolizable materials used to reinforce bones in sci-fi settings?

I'm trying to write about a species of genetically-altered super-livestock with reinforced bones. What are some common materials on Earth that a biological organism could ingest and metabolize that ...
0
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0answers
76 views

Effects of Remnants on Monsters

When monsters die, Drops aren't the only thing that form. In fact, it's a bit more complicated than that. After a monster dies, its magic tries to return to its natural state as part of a living soul (...
5
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2answers
669 views

Anatomically correct Cipactli

Cipactli is a monstrous deity from the Mexica/Aztec culture characterized to be insatiable, primitive, and represent chaos and disorder. Representations combine features from different animals, ...
5
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2answers
205 views

How would a scientifically literate community manage forseeable malnutrition [closed]

Assuming a roughly current level of scientific understanding, how would a small (<20) community manage a period of three months where they could only supply themselves with, on average, 800 kcal of ...
11
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10answers
4k views

How big would the brain of an omnipresent being be?

There is a being who has been alive for as long as there has been life on earth. It has the ability to anomalously produce matter from its body out of nothing. Through the production of microfine ...
4
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6answers
172 views

What factors influence children's diets?

In the USA, many children are known to have an overwhelming preference for "junk food"; cuisine that ranges from boring (chicken nuggets, macaroni and cheese, plain hot dogs) to outright ...
3
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2answers
108 views

Where would the reproductive organs be on an insect-millipede?

I had an idea for a creature that is a hybrid of an insect and a millipede. More specifically, it has the body of a millipede with the head and thorax of an insect, replacing the millipede head and ...
17
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6answers
5k views

Could humans have eyes (natural or artificial) capable of resolving bacteria or even viruses on a surface without giving up our current vision?

I've been kicking around story ideas about how much different this pandemic would be if human beings could actually see the virus on our hands, on surfaces, in the air, etc. This lead me to wonder: ...
3
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1answer
98 views

What Adaptations To Human Physiology Would Be Necessary To Be Able To Use Echolocation Underwater?

After watching this video about humans being able to use echolocation, I began to wonder if this same idea could be used underwater. Could a human be able to use echolocation underwater without any ...
3
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2answers
236 views

If Gastropods Were the Size of Dogs, What Sound Would Their Mouths Make?

Inspired by If Spiders Were the Size of Horses, What Sound Would They Make? but relevant to my own world. I'm thinking of a terrestrial slug or snail, the size of a large dog (Great dane or Irish ...
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6answers
5k views

If Spiders Were the Size of Horses, What Sound Would They Make?

I'm worldbuilding an alternate earth which has less gravity and the high oxygen levels of the late carboniferous. Thus, resulting in very large invertebrate life. In one scene, the main character is ...
2
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0answers
152 views

In a world where mankind is ruled by a giant intelligent beaver, what food is no longer consumed (by humans)? [closed]

Pretend I'm writing a novel about a how a beaver takes over the world: What food/s may/might/(grammar?) no longer be consumed by humans or at least consumed less? Edit 1: I was wondering if anyone ...
23
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6answers
3k views

How to make “humans” that can hold their breath for a long time?

Let's say I have an aquatic humanoid, vaguely like a selkie. As creatures that spend a lot of time in water, it would be great if they can stay under water for "a while". The human breath-...
1
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2answers
146 views

What temperatures can be tolerated by a ''small'' human?

Temperature resistance is linked to size and bodily composition. An easy example is the small obesity rate in cities like Singapore, regardless of the modernized diet fat people don't hang around in a ...
4
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4answers
1k views

Would marriage exist in a parthenogenetic human society? [closed]

I'm working on something about an all-female human society modeled on real single-sex parthenogenetic species like the famous Whiptail Lizard. A few of the things I'm borrowing from Whiptails are: ...
3
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1answer
65 views

Can a solar powered biological stationary giant snake exist?

The Moon Jungle is known for its enormous trees with dense vegetation and fauna. However, there is a path where no tree or bush ever dares to block the way of day or moonlight. In this path stands ...
15
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10answers
4k views

Does a cyborg have the need for a toilet?

Most of the guts and stomach are removed. The torso is cut short below the ribs. Instead of legs there are vehicular links which the cyborg can put on and take off like a prosthesis. There are ...
4
votes
3answers
194 views

Can my plant produce hormones that cause ultra-violent behavior?

A human without hormones or pheromones could be compared to something more like a plant, tool, or simply a reactionless amalgamation of cells without purpose, fears, and emotions. Such a person wouldn'...
5
votes
1answer
121 views

How many notes can devils play with their horns?

Everyone knows the trope of horned humanoids with a pointy tail on their back and two horns in their head. ''It's just not a person with a tail and two horns, it's something completely new and inhuman!...
3
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3answers
199 views

How would a plant like entity use animals?

The land is covered in structures of green coloring. Some look like igloos and some have veins pulsating and moving slowly with membranes which seem to almost be breathing the way lungs do. Some of ...
7
votes
4answers
197 views

growing and farming metals

Is there any biological or environmental factor stopping animals or plants to be farmed for their metal absorbing qualities? Consider we are also counting creatures created through selective breeding, ...
1
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0answers
42 views

Can coral reefs thrive in large freshwater bodies or evolve to adapt in large lakes? [closed]

How can coral reefs evolve or adapt to be able to thrive in large freshwater bodies?
5
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6answers
1k views

How could a living biological sword survive a spaceship crash and then isolation for millennia?

A sword with a blade made of metal, or the least, it looks metallic, shiny and clean. A sword as old or probably older than our civilization, it has writings on the blade, never seen before, never ...
1
vote
1answer
91 views

Plausibility of plastic bones

So, how possible are plastic bones? Take clorox by Stephen L. Gullet for example, organisms use chlorine as a defense mechanism, which eventually accumulated in the atmosphere (1%),which caused plants ...
5
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9answers
1k views

How can humans survive in an ecosystem that includes longer-lived elves?

So I was reading news about our ancestors when I realized that we paved the way to our current stage by outliving other hominids in the past, either intentionally or not - by either food competition, ...
3
votes
5answers
151 views

How can a “God in the Shell” Avatar be prevented from containing a deity's full power?

Avatars are artificial constructs created by gods to interface with humans. Gods exist in the spiritual realm, a dimension separated from the mortal realm by a barrier. These avatars are built with ...
2
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1answer
125 views

Permanent marker (sharpie) on an eyeball [closed]

I have a misguided character who will try anything to change their eye color. What are the likely outcomes of using a sharpie (permanent marker) for this? Would the color stick at all? If so, how long ...
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1answer
137 views

What evolutionary pressures would lead to Oni? [duplicate]

among the many races in my world include Oni and i'm curious as to what evolutionary pressures would to a group of divergent hominids to evolve into them? some basic characteristics of my Oni are: ...
0
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0answers
24 views

Are humanoids capable of breathing in water and on land feasible? [duplicate]

Is it possible to genetically engineer a creature that can breath in air and water? If so, what changes would have to be made assuming the creature was originally a human?
2
votes
4answers
119 views

Anatomically Correct Dire Bear

Characteristics of the Dire Bear Larger than a normal bear - about ten feet from paws to head whilst on all fours Fur covered in bony protrusions, that act as armour And that's it. Is there a way ...
2
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2answers
156 views

Making egg laying humans [duplicate]

What are the minimal changes to human biology that a biological engineer can make to create humans that successfully reproduce via egg-laying? Assume that he wants to preserve as much of the ...
5
votes
3answers
169 views

How, if at all, could one tell that abiogenesis happened several times on a planet?

I'm wondering if life could arise again on a world which already has a fully developed biosphere and be successful. Ignoring how life does arise, in the first place and again (black smokers, clay ...
3
votes
1answer
157 views

Is it medically possible to give someone super strength with gene editing?

I'm trying to find a reasonable medical explanation for a normal-looking human having around 10x the strength of the general population, defined for the sake of easily-measurable goals as the amount ...
3
votes
1answer
127 views

Methods to allow dragons and humanoid animals to speak like humans?

The design of an animal's body and head are different than that of a human, so I am wondering what things I could modify about a dragon or humanoid animal in order to allow it to speak with a normal ...

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