Class 11th Biology | Breathing and Exchange of Gases Chapter 17 Complete Chapter by Ashok Meena

Videolist31218 Jan, 2022Education

We need energy to perform various activities. This energy is derived from the catabolism of various components of food, e.g. proteins, carbohydrates, fats, etc. Oxygen is required for catabolic processes and carbon dioxide is released in the process. So the body requires a continuous exchange of gases, oxygen from the atmosphere is taken inside and carbon dioxide produced is taken out. This process of gaseous exchange is called breathing or respiration.