uh...someone with better mammalian
physiology step in here, but basically water is released from the 'energy cycle'
from the electron transport chain, which is basically a chain of NAD molecules
where H+ jumps from molecule to molecule and releases ATP. The end of
the chain is 0, so when the two H reach the end, wha-la, they make H2O.
Water is USED in the Citric Acid cycle, and neither used nor produced in
glycolysis. When you have a lack of oxygen, the ETC backs up, backing up
the Citric Acid (Kreb) Cycle, and then your lactic acid builds up because it
cannot go through the CAC. I use a wall sit in class to demonstrate lactic
acid build up.
