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You only have to check out the extremophiles. Single celled bacteria that can live at high temperatures. Their enzymes are very robust not to mention the way they package their DNA and RNA.
Your whole physiology depends on DNA, RNA and proteins all interacting in an aqueous environment. You would not exist without Hydrogen bonds.
Without Hydrogen bonds organic life would not exist.
It gets even better as all organic macromolecules have a 'shell' of water bound by Hydrogen bonds. I have seen ordered water 'shells' in high resolution xray structures.
Check out this substance called trehalose it mimics water and can protect living organisms from dessication and or freezing.
Bert
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