expiration,.... enzymes

[isabell]

i have a doubt in expiration the air compared to the air we breathed, it doesnt cool or get warm or gain moisture or loose it, am i correct?


Is there a enzyme responsible for the speeding of reactions involved diffusion of CO2 and oxygen?

i saw theres carbaminohemoglobin, bicarbonase and oxyhemoglobin and the one that makes more sense to me is carbonic anhydrase but im not sure.
does someone out there has a better idea?,
thanks

[canalon]

i have a doubt in expiration the air compared to the air we breathed, it doesnt cool or get warm or gain moisture or loose it, am i correct?

Make a simple test: Go out, or in your freezer if it's warm and clamy outside (lucky you, it's freezing in Canada), and consider how moist and the temperature of air. Now breathe in a few minutes and consider moisture content of exhaled air, and its temperature.
Conclusion?

[isabell]

im in Canada too, but i did it in my freezer and i feel it is warm and gained moisture

[canalon]

Yes, so it does get moist and warm. Because you are heating it with your body temperature (in fact it already start to warm from the upper repiratory tract, to protect your lungs). The water simply come from the humidity inside your lungs (the air is relatively dryer than your lungs which is made of thin epithelium to help diffusion of gas).

As for enzyme, sorry I can't help, I really don't know.