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Questions tagged [extremophiles]

An organism which thrives in extreme chemical or physical conditions which would be harmful to most life forms.

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Simple and inexpensive astrobiological studies at MDRS

MDRS is a Mars analogue station where volunteers live in Southeast Utah desert for two weeks and perform experiments. Some of these experiments are done in conjunction with public outreach for middle ...
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How much pressure can human withstand if inner and outer pressure is balanced?

I know human can't dive too deep because there's pressure difference between inside and outside of the body. But how much pressure can human withstand if human is breathing components that is ...
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Extreme or just rare: evolution of complex life in extreme environments [closed]

Many environments are considered "extreme" (boiling hot springs, acidic/basic water, etc) and those tend to be dominated by Archaea instead of the "usual" mixture of bacteria along with complex plants ...
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Can we artificially produce a species that would be able to live on Antarctic ice sheet? [closed]

Can we artificially produce a multicellular species that would be able to live on Antarctic ice sheet? By means of genetic engineering, selection etc. UPDATE There are organisms, called Watermelon ...
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Why are the most heat tollerant organisms prokaryotic?

Prokaryotic organisms are able to grow at far higher temperatures than are eukaryotes. Archaea are known to group, among some mesophiles, the most extremophiles organisms (es. Pyrococcus furiosus), ...
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Are polyploidal organisms parasatized by selfish genes? And if not, why not?

Certain prokaryotes are polyploids. For example, Thermus thermophilus has about five copies of its genome (http://jb.asm.org/content/192/20/5499.full). One extreme polyploid, Epulopiscium fishelsoni, ...
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Can ants survive a plane ride?

I just came back home a few hours ago from the airport and my aunt had peaches in her car full of ants. This made me wonder if the ants had joined us from the plane? This leads to the question can ...
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Is it possible and how could it possible for plant to survive in naked space

I heard that there are fungi could survive on space station in the naked space. I want to know if any plant could be able to do the same How many limitation of plant differ from fungi And could it ...
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Can tardigrades survive being eaten?

Compared to a tardigrade, the cockroach seems fragile. But can tardigrades survive the acidic environment of being eaten by most animals?
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How to obtain a tardigrade?

The tardigrade is often mentioned as one of the most "alien" lifeforms on Earth. This video speaks for itself: (from this article) I have long wanted to see a tardigrade with my own eyes. I have a ...
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How can (or did) Deinococcus radiodurans continue to evolve after developing resistance to mutation?

Deinococcus radiodurans has a remarkable ability to resist damage to its DNA due to radiation, dehydration or (to my knowledge) any other source. It keeps multiple copies of its genome and has a ...
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How close to Earth's core can organisms live?

We don't to know much about organisms living deep below the Earth's crust. Recently a team led by S. Giovanni discovered some microbes 300 m below the ocean floor. The microbes were found to be a ...
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What's the biggest obligate anaerobic organism discovered till now?

Beside many anaerobic single cell organisms, there are some annelid worms that are obligate anaerobic at least in their early development stages. Probably, due to low concentration levels in nature, ...
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Is infrared photosynthesis possible?

The post-apocalyptic science fiction novel Dark Universe by Daniel F. Galouye has some plants living inside bunkers that use infrared light for photosynthesis. There are speculations that ...
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Is it possible to have life in vacuum?

I just got struck by curiosity now: Intuition says no, but I've never had confirmation of it.
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Which are the most extreme artificial environments that lifeforms/ecosystems have adapted to?

I have heard of 'extremophiles', lifeforms that naturally thrive in all sorts of extreme environments. Is there any evidence to suggest that lifeforms are adapting to the extreme environments (such ...
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Can the body of any organism on Earth live without impairment both in vacuum, and within Earth's atmosphere?

I know from reading that a human in vacuum needs a space-suit to survive. Is the body of any organism on Earth capable of living equally in vacuum, and on/below Earth's surface within the atmosphere?...
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What's the opposite of a thermophile?

Thermophiles, heat-loving organisms, have been a popular topic of research for decades due in large part to the utility of their enzymes in various chemical reactions (Taq Pol single-enzymedly made ...
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Does GFAJ-1 use Adenosine triarsenate as its energy currency?

Regarding the bacteria found in Mono Lake, CA that scientists believe uses or can use arsenic in its DNA backbone where life as we know it uses phosphorus (according to their experiments depriving the ...
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What is the most heat-tolerant organism?

What is the most heat-tolerant (or heat loving - hyperthermophile) organism so far identified? What adaptations does this organism have in order to endure such high temperatures?
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How do biological communities at deep-ocean hydrothermal vents migrate between vents?

Much interest in the astrobiology community has been generated by the discovery of biological communities populating deep-ocean hydrothermal vents (i.e. "black smokers"). (1) These ecosystems rely on ...