Hi there,

Here are some important questions related to breathing and exchange of gases.

1. Define respiration. How is it different from breathing?

2. Explain the term 'aerobic respiration.'

3. What are the primary respiratory organs in humans?

4. Describe the structure and function of the human respiratory system.

5. Explain the mechanism of breathing in humans.

6. How is the transport of gases (oxygen and carbon dioxide) facilitated in the blood?

7. What is the role of hemoglobin in the transport of oxygen?

8. Discuss the significance of the partial pressure of gases in the exchange of gases in the lungs.

9. Explain the process of external respiration during breathing.

10. Describe the structure and function of alveoli in the lungs.

11. What is the role of the diaphragm and intercostal muscles in breathing?

12. Discuss the neural control of respiratory movements.

13. How is carbon dioxide transported in the blood?

14. Explain the concept of oxygen dissociation curve.

15. Discuss the factors affecting the rate of respiration.

16. What is the Bohr effect, and how does it influence oxygen release from hemoglobin?

17. What is respiratory quotient (RQ)? How is it calculated?

18. Describe the role of respiratory pigments in organisms.

19. Explain the process of gaseous exchange in plants.

20. Discuss the effects of smoking on the respiratory system.

These questions cover various topics related to breathing and gas exchange, as per the Class 11 NCERT Biology curriculum.

They can serve as a useful resource for understanding and revising the concepts in the respiratory system.

Regards