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Where does the oxygen that keeps us alive come from?

Answer» <html><body><p> Water</p><br/><br/><p>Since water and carbon dioxide are both compounds which contain oxygen, it is possible to obtain oxygen from either. The oxygen produced from photosynthesis is not released into the air. It is not until <a href="https://interviewquestions.tuteehub.com/tag/cellular-414571" style="font-weight:bold;" target="_blank" title="Click to know more about CELLULAR">CELLULAR</a> respiration that oxygen is released. The oxygen comes from water. The water molecules are split at the “<a href="https://interviewquestions.tuteehub.com/tag/beginning-894536" style="font-weight:bold;" target="_blank" title="Click to know more about BEGINNING">BEGINNING</a>” of photosynthesis for the electrons. These electrons eventually make their way to the electron transport chain, where oxygen is the final electron <a href="https://interviewquestions.tuteehub.com/tag/accept-846678" style="font-weight:bold;" target="_blank" title="Click to know more about ACCEPT">ACCEPT</a>, and then released into the air. <a href="https://interviewquestions.tuteehub.com/tag/scientists-638066" style="font-weight:bold;" target="_blank" title="Click to know more about SCIENTISTS">SCIENTISTS</a> agree that there’s oxygen from ocean plants in every breath we take. Most of this oxygen comes from tiny ocean plants – called <a href="https://interviewquestions.tuteehub.com/tag/phytoplankton-1154334" style="font-weight:bold;" target="_blank" title="Click to know more about PHYTOPLANKTON">PHYTOPLANKTON</a> – that live near the water’s surface and drift with the currents. Like all plants, they photosynthesize – that is, they use sunlight and carbon dioxide to make food. A byproduct of photosynthesis is oxygen.</p></body></html>


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