9 votes

What is the deepest living underground organism?

Have any deeper living organisms ever been found? In 2021, researchers recovered microbial cells and DNA from rocks retrieved from a depth of 4,850 m below the surface.1 The New Scientist covered ...
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  • 7,729
5 votes
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What's the biggest obligate anaerobic organism discovered till now?

There are three worms which have been found in the sediment of the mediterranean seafloor, which not only live without oxygen but also do not tolerate the exposure to oxygen. They belong to the ...
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  • 49.2k
5 votes

Could biofilms float and survive in the sulfuric acid clouds of Venus?

I have pondered life on Venus. I think the biggest problem would be lack of free water. The atmosphere is thick and under high pressure, and polar CO2 and H2SO4 like to bind with water. There is no ...
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3 votes
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Can tardigrades survive being eaten?

In there natural state no, tartigrade have absolutely no way to survive the acidic content of stomachs and are fragile. In their cryptobiosed form (extremely resilient form) there has been no ...
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  • 858
2 votes

How can (or did) Deinococcus radiodurans continue to evolve after developing resistance to mutation?

According to the "Functional adaptation" section of this webpage, Deinococcus radiodurans uses repair proteins to stitch up DNA after radiation damage. Meaning, after a burst of radiation, the DNA ...
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  • 2,375
2 votes
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How close to Earth's core can organisms live?

There's a lot we don't know about life in deep caves, but we can bound the deepest living organism to at least 3.5 kilometers down, and probably not more than 30 kilometers down. The worms recovered ...
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  • 3,988
2 votes
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Is infrared photosynthesis possible?

There is an algea that uses IR: The newfound pigment, dubbed chlorophyll f, absorbs light most efficiently at a wavelength around 706 nanometers, just beyond the red end of the visible spectrum, ...
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2 votes

How to obtain a tardigrade?

Tardigrades can be found in almost every habitat! The easiest way to find them is probably to look in lichens or mosses (although it depends where you live). serc.careton.edu website suggests a ...
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1 vote
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Are polyploidal organisms parasatized by selfish genes? And if not, why not?

In short, being haploid or polyploid should not protect you from Selfish Genetic Elements (SGES). Almost all eukaryotes are polyploid. Plants are the oft-cited example. Wheat, I believe, is hexaploid ...
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  • 1,279
1 vote

How can (or did) Deinococcus radiodurans continue to evolve after developing resistance to mutation?

Deinococcus radiodurans did not "develop resistance to mutations". It is able to repair its chromosome when scatered in pieces by radiations or desiccation, while other bacteria would die in such ...
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  • 184

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