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11

SolarLunix posted an excellent answer detailing the criteria for being classified as "alive", and showed that by those criteria, mitochondria could be considered as "dead". However, I would argue that the narrator's statement in your video does not make any sense. The currently-accepted theory of the evolution of mitochondria (and possibly other organelle) ...


7

I would like to expand a bit on the above post, because the logic used in the conclusion would also mean that endosymbionts, such as https://en.wikipedia.org/wiki/Buchnera_(bacterium), who cannot survive outside their host are also "dead". I think many of us disagree with that notion, so instead I would say that it's the fact that so many of their genes ...


3

Short answer: According to the definition of life, yes, Mitochondria are dead. To be considered alive you must meet the following criteria: organized structure performing a specific function an ability to sustain existence, e.g. by nourishment an ability to respond to stimuli or to its environment capable of adapting an ability to ...


-1

Could not fit in a comment.. The question is off-topic Biology is the study of life. Without a good definition of life, Biology itself is poorly defined. It appears that there is no universally accepted definition of life and therefore Biology (just like Chemistry and Physics to cite other examples) is a poorly defined field of study. But it is not ...


2

Probably not. There's a thing called Hayflick limit, which is basically a limit of life expectancy caused by a shortening of telomeres with every cell division. And since most of our cells complete cycles more based on time (life cycle of RBC 100 days), and not due to damages to a cell, our telomeres would still shorten at the same rate. Of course the ...


1

It sounds reasonable that reducing the physical stress on a body would reduce the wear and tear, and thus increase the owner's lifetime. However, it's just as reasonable that human bodies are designed to be under stress, and drastically changing the environment will harm the body in subtle and even obvious ways. For instance, some research shows that lung ...



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