/u/bohackistan's posts in /r/askscience

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Do organisms living in complete darkness (caves, deep water, underground) have a circadian rhythm? Most organisms do, but does it ever appear in those that have no access to a 24 hr cycle?

1720 upvotes

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If it were possible to supplement ATP directly to the cells, circumnavigating cellular respiration completely, could a person live without eating or breathing?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do organisms living in complete darkness (caves, deep water, underground) have a circadian rhythm? Most organisms do, but does it ever appear in those that have no access to a 24 hr cycle?	1720
If it were possible to supplement ATP directly to the cells, circumnavigating cellular respiration completely, could a person live without eating or breathing?	1