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r/askscience



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Why is there no transmissible therapeutic virus if biology doesn't forbid it? For example, a harmless virus that spreads from person to person but actually does something beneficial, like lowering LDL cholesterol or preventing/reversing tooth decay?
Why is there no transmissible therapeutic virus if biology doesn't forbid it? For example, a harmless virus that spreads from person to person but actually does something beneficial, like lowering LDL cholesterol or preventing/reversing tooth decay?

Is there a theoretical minimum size for "life"?
Is there a theoretical minimum size for "life"?

So in school my son is learning about microscopic organisms and he asked me stuff like "how many atoms are single celled organisms made of"

And obviously even the smallest cell is gonna be many many atoms but is there some kind of theoretical minimum where it stops being "life" and starts to just be "atoms/molecules doing things"?

Like I've seen that artistic rendering of the enzyme or protein pulling water around a cell like this https://www.reddit.com/r/educationalgifs/s/i0vnokdbin

But would we consider that protein alive in its own right?