| His throat burned for oxygen and he felt his ribs compressing, compacting, and ready to break. |
| The reason we need to breathe is to provide the oxygen needed to carry out cellular respiration in our cells. |
| It obeys the law of conservation of mass since the amount of phosphorous and oxygen remains the same throughout the reaction. |
| Xanthine oxidase uses molecular oxygen as an electron acceptor, resulting in the formation of superoxide radicals. |
| Some bacteria are able to switch from enzymes using oxygen as a terminal electron acceptor to enzymes using alternative electron acceptors. |
| Be sure to include submergent plants such as common waterweed and hornwort for their high oxygen output. |
