When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of the nitrogen? (a) It moves along with oxygen into the cell (b) It comes out with the CO2 during exhalation (c) It is absorbed only by the nasal cells (d) Nitrogen concentration is already more in the cell so it is not at all absorbed
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Breathing is an act of ventilating a respiratory surface with air. Breathing is usually accomplished through muscular movements that can be divided into inspiration (intake of air ) and expiration (outflow of air). The composition of inhaled air is 20.94 % oxygen, 0.04 % carbon dioxide, 79.02 % nitrogen and trace gases. The composition of exhaled air is 16.49 % oxygen, 4.49 % carbon dioxide, 79.02 % nitrogen and other trace gases. The nitrogen is an inert gas, during breathing, there is no change in nitrogen percentage in inhaled as compared to exhaled air.
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