Post by yi on Jun 17, 2007 13:30:14 GMT -6
*puts on spiffy Doctor’s Coat* ((well.. I actually don’t get one until I start med school in 3 years *cries* but the point remains =P))
There is a fundamental problem with the idea that waterbenders can manipulate the water in your body. The problem being.. that there is VER VERY LITTLE pure water in your body at a single point in time that has not been chemically altered into either plasma, or a bodily function sustaining electrolyte fluid… While it is true that your body is like 80% water.. but the catch is.. its not real water =P
Here is my take on why waterbenders cant bend the “water” in a body, using science as evidence =P. From what we have seen so far in the series, (which is what I will stick by… if it hasn’t been seen in the series.. then it can’t happen. Period) Only pure elements (Rock, water, air, fire) can be bended by their respective benders. And most of you are probably asking yourselves… What about the slurry, or the perfume?
The answer is simple and makes sense scientifically. Again the following is based on the premise that benders can only bend pure elements as seen on the TV show.
First we have to have a little science refresher! There are two types of mixtures that are common; hetero/homogeneous mixtures, and biochemical mixtures. There are also two different types of reactions, Physical and Chemical. This will come in just a few minutes but let us first look at the two types of mixtures:
Heterogeneous/ Homogeneous mixtures:
These are mixtures that we see everyday.. Vinegar and oil, gravel, salad, soda, slurry, perfume, etc… The main thing to know about these types of mixtures… is that they can be separated into their basic elements. Slurry and perfume can have the water evaporated from in leaving water vapor and dirt. Both are now bendable elements. When they are combined in slurry, like in the TV show, they could be bent by a waterbender or an earthbender… why? Because if a watebender is bending the water in the slurry, the water molecules are directly influencing the dirt particles to move them on a molecular level... and visa versa with the earthbender. The dirt particles are forcing the water molecules to follow it.
Another reason why this can happen is because its undergoing a physical reaction. Physical reactions are mixing, shaping form or state, and any other physical process that does not change the element on a molecular level. SO by mixing water and dirt to get slurry, you still haven’t changed the fact that it contains water and dirt. Both of which are completely bendable compounds.
Biochemical Mixtures:
This is where my main point gets made. Once water enters your body it immediately undergoes many chemical reactions to make it usable to the body. Example: Cell metabolism, the creation of ions. This is where 99% of the water goes. In the mitochondria of the cell, water gets reduced and oxidized and changed chemically into NADPH, random salts, ATP (very important), waste (Urea), pryuvate, glucose, etc…
The main thing here is that these processes are Chemical reactions. In a chemical reaction: compounds get modified on the molecular level and changes the nature of the product. Reduction of water into HCl, or oxidation of water into peroxide H2O2. Dry HCl (acid with no water medium) has no chemical similarities to water, therefore a different compound. Dry H2O2 is not the same as water, they may be really really close, but it is a different chemical with different properties then water. Therefore scientifically NOT WATER.
So back to my original argument. Water is constantly reduced, and oxidized in the body… I don’t want to get into the biochemical processes of Cell metabolism, That will end with me writing out synthesis reactions and I don’t want to do them, then scan them in and paste them here…
What im trying to say OVERALL, is that water is highly conserved in the body. It gets used instantly by every cell in the body. When water mixes with Stomach acid, it instantly turns to salts.. simple acid/base reactions. Then more advance oxidation and reduction reactions happen in the cell, and then the water gets converted to Urea and disposed of through urine.
So while the body may contain water in it, it is rapidly used and I don’t think a waterbender is quick enough to get a hold of the water molecules in the body before they are reduced or oxidized by cells. Cell metabolism happens countless time within a single seconds.. it is always happening, converting and reducing water to needed compounds.
When a person is brought in suffering from dehydration, they don’t give him water.. they give him a banana bag, which contains proteins, electrolytes, salts, and other things that the body needs that are made by water… you can survive without water if you are attached to a banana bag or IvIG… proof that while water is sufficient, it is not necessary… money wise.. its cheaper to drink the water…
Oh FYI.. a banana bag doesn’t use water.. it uses a saline solution to dilute the needed compounds….
So that is my two cents…
Once the water goes inside your body, it undergoes chemical changes and is no longer water, therefore can’t be bent in my opinion.
References:
Campbell’s biology 7th edition (Campbell et all)
Organic Chemistry (McMurry et. all)
Principles of Biochemistry (Albert L. Lehninger et. lall)
Human Anatomy and Physiology 6th edition (Elaine N. Marieb et all)