At the end of the electron transport chain, the electrons originally stripped from glucose combine with molecular oxygen to yield which compound?

Water

Explanation:

Oxygen is the final electron acceptor in aerobic respiration. Moleculer oxygen is highly oxidizing agent and therefore a good elctron acceptor. At the end of electron transport chain oxygen accept electrons and combine with protons to form water. If a person is not breathing enough there will be not enough oxygen in the cells to accept electrons, ETC will stop and there will be no ATP production. A cell can't carry out its functions without ATP. Therfore cellular respiration is breathing, and breathing is life.