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Tutorial: How do we get the oxygen we breathe J Prilusky, E Hodis doi: 10.14576/431679.1869588 This tutorial is designed for high school and beginning college students. When we breathe oxygen from the air is taken up by blood in our lungs and soon delivered to each of the cells in our body through our circulatory system. Among other uses, our cells use oxygen as the final electron acceptor in a process called aerobic respiration – a process that converts the energy in food and nutrients into a form of energy that the cell can readily use (molecules of ATP, adenosine triphosphate). >>> Visit this tutorial >>>