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Sagot :
The air we breathe in has 21% oxygen and 0.04% carbon dioxide, whereas the air we exhale has 16.4% oxygen and 4.4% carbon dioxide. This is because when we breathe in air, our cells use oxygen to produce energy and generate carbon dioxide as a byproduct.
As a result of respiration, the same number of carbon-dioxide atoms that were converted from oxygen and carbon were also released. Respiration has adhered to the law of conservation of mass by conserving mass or material in this way.
The process of breaking down the chemical component glucose with oxygen to produce carbon dioxide and water is known as cellular respiration. Cellular respiration's general chemical equation is:
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (stored in ATP)
Just the correct quantity of chemical energy is stored in ATP molecules to drive metabolic processes inside cells.
Thus, we might draw the conclusion that gas exchange occurs through diffusion in the lungs' alveoli. As a result, the air that is breathed and exhaled has various chemical compositions. These are the ways that the amounts of carbon dioxide and oxygen that are taken in by the lungs and those that are expelled differ.
LEARN MORE ABOUT RESPIRATION HERE:
https://brainly.com/question/18024346
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