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Question
Define breathing. State the differences between breathing and respiration.
Solution
Breathing is a physical mechanism in which an organism takes up oxygen from the air and gives out carbon dioxide.
| Breathing | Respiration |
| It is a physical process. | It is a biochemical process. |
| It involves exchange of gases. | It involves exchange of gases along with the oxidation of food. |
| It involves the lungs, where the exchange of gases takes place. | Along with the lungs, it involves the mitochondria of the cells, where oxidation of food takes place. |
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