Questions tagged [death]

A state in which an organism or a cellular system, as defined by its full set of functionality, ceases to exist (i.e., most of the functions are irreversibly lost).

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8
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4answers
204k views

How long human can survive with just drinking water everyday

Can humans live without eating food, just by drinking water? How long can we survive just by drinking water everyday?
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3answers
8k views

Can the dead be brought back to life by viruses?

Zombies have been a part of popular culture for decades. The living dead rising up to take over the world is a terrifying concept, worthy of Hollywood blockbusters and television hits. Some of those ...
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1answer
1k views

In humans what is the last metabolic process to cease after death?

After death which of our body's metabolic processes will continue functioning for the longest?
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2answers
29k views

Can one die from pain?

Is it possible that a human or any other creature can die from pain? I googled and found different answers. Some articles say Yes while others say No.
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1answer
107 views

Could a single cell be brought to life?

If a scientist is observing a single cell under a microscope, and then realizes that the cell has died, is it possible to bring that dead cell back to life? For my inquiry, let's assume that the ...
12
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2answers
4k views

Do ants really dispose of their own dead, and how/why?

I just read this from Wikipedia's Swarm Behavior article: Despite the lack of centralized decision making, ant colonies exhibit complex behaviour and have even been able to demonstrate the ability ...
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1answer
5k views

What produces the strong odor of decaying dead animals?

Are there specific chemicals responsible for producing the strong, putrid odor that is present after an animal deceases? Also, how long does this odor last?
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2answers
471 views

Does an increased reproduction/mortality rate provide an evolutionary advantage?

If a species has a high mortality/birth rate, then it is able to adapt to changing environments more quickly than species that live for a long time. Without a high mortality rate, food and other ...
5
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1answer
6k views

How long does it take for a cricket to die at subzero temperatures?

I am on a number of reptile groups and I often hear freezing recommended as a humane way to get rid of surplus feeder insects. However, they can also revive if you don't leave them in there long ...
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0answers
188 views

Does reproduction cause aging ? Is aging just a strategy to increase reproductive success in all organisms? [closed]

Background for why I am asking this: I read a book—modern biological theory and experiments on celibacy— which uses life history theory to imply that reproduction is the reason why organisms grow old....
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2answers
1k views

Which are the last cells of the human body to die?

When somebody dies, which are the last surviving cells of his/her body? Those of hair, nails, or some other obscure but resilient cells? Shedding light on why and how they are so vital might boost ...
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2answers
551 views

Metabolic activity postmortem

I read some papers about studies on metabolism in post-mortem tissues in human, but I do not exactly the reason about why our brain continues to have activity after death.
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2answers
71 views

Is it possible for a human to live forever if he/she didn't catch any diseases?

Aging is not a disease, but it's the gradual weakening of the body, as the body gets weaker it gets more prone to diseases. So one doesn't die from aging but from diseases. So if one didn't catch any ...
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0answers
88 views

How did the tendency to perform death rituals evolve?

Both elephants and humans perform rituals when deaths occur. However, I do not see any evolutionary benefit of this. The rituals take time, which apparently could be better spent hunting, foraging, ...