Originally Posted by protonitron

Now back to our crazy debate. Ok fine ATP might not produce body heat but I am pretty sure it is involved in exothermic reactions. I know that body heat can drop if there is not enough total negative enthalpy change as a result of all the bodies processes to counteract the temperature gradient between body and room. I still think the lion would be able to maintain it's body temperature for however long it takes for it to starve which might not happen over a week if the lion was a fat lion beforehand and the room has the qualities of a lion's usual habitat. I know that people shiver when they naked, because humans are evolved to wear cloths and don't have fur so a large part of the thermoregulation system is ineffective for me. I have always been taught that hypothermia is deadly because the enzymes stop functioning so your brain and metabolic pathways are ineffective which then leads to organ failures. And hypothermia only has a negative feedback on heat loss, shivering uses the muscles which uses respiration and these reactions and movements create heat, otherwise we would not shiver.

Originally Posted by protonitron

When I said that amino acids were rarer than acids I was speaking in terms of supply and demand, left over amino acids are probably (although I do not study biochem in any sort of detail and am, as I am sure you can tell, mostly relying on guesswork) rare because they make cells which are what create life (in terms of the fact that if something has cells it is or was alive). Does that cover everything?