Is Oxygen the only thing we can breath that helps sustain our life?

Yes.

Come on, oxygen is not the only thing with atomic number 8, we can go with flourine atomic number 9 or something, and excrete it as gas, we don't even need to drink water

 

 

P.S. We got artificial sugar right? This thing should be even easier

Nevermind I found my answer here

Edited November 25, 20169 yr by fredreload

Artificial sugar only fools the taste buds. There is liquid breathing, but still involves disolved O2.

Right, we are built based on oxygen needs, so it really is hard to replace it with other elements

Edited November 25, 20169 yr by fredreload

That is not the reason. Assuming you mean humans or other animals the oxygen requirement is due to the fact that mitochondria are only able to use oxygen as terminal electron acceptor. Specifically, cytochrome C is involved in this process. Bacteria have other proteins in the electron transport chain to utilize other substrates. In either case one hard limit is the redox potential between the electron donor and acceptor, as that determines how many protons can be pumped. Incidentally oxygen is the most efficient substrate that is used for respiration. Other substrates have the issue that they a) are far less effective and b) are usually solids which limits the rate they can be utilized.

Come on, oxygen is not the only thing with atomic number 8

 

 

I think you will find it is.

 

 

, we can go with flourine atomic number 9 or something, and excrete it as gas, we don't even need to drink water

 

 

Fluorine is extremely corrosive and would kill your pretty quickly if you tried to breath it. And replacing water with hydrogen fluoride would not be a good idea...

Come on, oxygen is not the only thing with atomic number 8,

Thank you for clarifying the depth of your ignorance. We can now be sure that nobody needs to read any further through this thread. Perhaps it's time to lock it.

Probably just meant to use a different word. Does seem like OP found the answer his own question though.