Skip to main content

New answers tagged

0 votes

Is it possible for a creature to exist as a biological nuclear reactor?

I would say: sure. At least in the sense of it being biologically possible, though unlikely on current Earth. I doubt there are ecological niches here where evolution of biological nuclear reactors ...
JanKanis's user avatar
  • 1,404
2 votes
Accepted

How does life on this planet get enough iridium?

Your planet has enough sulfur As Wiki states, iridium reacts directly with sulfur, producing iridium disulfide, which is a lot less dense than iridium (although a bit more dense than iron). In case ...
Vesper's user avatar
  • 7,517
0 votes

A Better Genetic Polymer?

The constant separation of strands is vital to DNA's function DNA is not a dead molecule, idly sitting by in the cell until it is time for replication, it is a molecule that is constantly being ...
Jack Aidley's user avatar
  • 7,507
2 votes

A Better Genetic Polymer?

If PNA synthesis happened in the cell in the same way peptide synthesis does it would have to be N terminus to C terminus, the reason is explained well here. While PNA can bind parallel or ...
Evelyn's user avatar
  • 21
0 votes

How would a hydrogen breathing Life-form respire?

Have a small percentage of hydrogen regularly made as a byproduct of photosynthesis to make plants that contain their own oxidizer. No free oxygen in the environment. No free oxidizers period. All ...
Vladimir Silver's user avatar
1 vote

Beryllium photosynthesis for floating plants?

Note: This is probably a bit of a wonky answer so if i got anything wrong please correct. So i can edit this answer correctly. Absorbing higher frequency light: More Energy: Light of higher frequency ...
Fallenspacerock's user avatar
4 votes
Accepted

Fire-analog on an ammonia planet

Yes. The sulphur found around volcanoes shouldn't react with the ammonia directly, but... The seawater is seaammonia. Ammonia dissolves alkali metals directly without needing them to be in compounds. ...
Escaped dental patient.'s user avatar
4 votes
Accepted

How would these floating plants not need to constantly adjust their gas bladder?

Buoyancy self-regulation via bladder membrane expansion and contraction caused by pressure change When the the plant goes higher, the pressure drops. As a result, the bladders expand (just like helium ...
Jani Miettinen's user avatar
4 votes

How would these floating plants not need to constantly adjust their gas bladder?

Simple dragging ballast tethers: limp cords of vines. The plants roughly adjust their buoyancy so the ends of the tethers lay on the ground or in the water beneath. Once stable with a length of tether ...
Christopher James Huff's user avatar
4 votes

How would these floating plants not need to constantly adjust their gas bladder?

The Simple Solution: Your plant could simply keep a small number of stomata open, such that the methane escape rate is similar or equal to the methane production rate. This won't account for ...
M S's user avatar
  • 2,328
3 votes

How would these floating plants not need to constantly adjust their gas bladder?

Hovering: It's just a ballon: Consider your plant to just be a ballon that is lighter than air. Because that's what your plant is so it's safe to assume it behaves exactly the same way. Reaching ...
Fallenspacerock's user avatar
5 votes
Accepted

How would these floating plants concentrate neon?

Do it mechanically Because Neon is non-reactive, it is very good at passing through membranes that other elements would be stopped by. So, you can have secondary bladders that are slowly pulled open ...
Nosajimiki's user avatar
  • 93.2k
4 votes

What's an effective swimming stroke for a species with gliding membranes?

Assumptions: Since it is not specified otherwise, I am assuming that these creatures: Have a similar density to humans Have a similar range of neck motion to humans Need to take breaths roughly as ...
KerrAvon2055's user avatar
  • 27.7k
1 vote

Life in the core of a rocky planet

I have doubts on some points: The proposed life forms could use liquid metal as a solvent whatever is down there in the core, due to the high pressures the core is either solid or an extremely ...
L.Dutch's user avatar
  • 287k
2 votes
Accepted

Xeno Nucleic acids on an ammonia planet

PNA lacks the charged phosphate groups that repel the complementary backbones of DNA strands, which causes it to bind more tightly to DNA and RNA than either do to themselves. It also makes it ...
Logan R. Kearsley's user avatar
7 votes

A Better Genetic Polymer?

Are you sure you want more stability and better error repair? At the end of the fair evolution is caused by random mutations which are caused by instability and/or non perfect repair. Too many ...
L.Dutch's user avatar
  • 287k
0 votes

Xeno Nucleic acids on an ammonia planet

I don't understand the question, why not use the bacteria we have on earth and build on that chemistry. https://en.wikipedia.org/wiki/Nitrifying_bacteria Those little nodes at the roots of soybeans ...
Pica's user avatar
  • 4,298
2 votes

Radiosynthesis using radon?

There is a bacterium that lives off radioactive energy. It was discovered in 2008 in samples of 60C groundwater from 3 Km underground in the Mponeng gold mine in South Africa, where it has lived for ...
Richard Kirk's user avatar
  • 8,833
4 votes
Accepted

How could an alien race convert an Oxygen-Nitrogen atmosphere into a Methane one?

Consider how your alien race uses methane for respiration Humans breathe oxygen because as an oxydizer, oxygen reacts readily with most carbohydrates to form CO2 and water. We obtain carbohydrates ...
Themoonisacheese's user avatar

Top 50 recent answers are included