Punjab 12th Class Biology Respiration Mcqs Test Online

1. When blood leaves the capillary bed most of the carbon dioxide is in the form of:

2. Respiratory pigments:

3. Breathing is an example of

4. Pulmonary emphysema:

5. Which of the following factors is the most effective in accelerating the rate of breathing in man?

6. Which of the following is the respiratory surface in human respiratory system?

7. Which event is not associated with the activity of expiration?

8. The amount of air moved in and out of the lungs with each normal resting breath is the:

9. How is most of the oxygen transported in the blood?

10. With which other system do specialize respiratory systems most closely interface in exchanging gases between the cells and the environment?

11. Which sequence most accurately describes the sequence of airflow in the human respiratory system? 1. Pharynx 2. Bronchus 3. Trachea 4. Larynx 5. Alveolus 6. Bronchiole

12. The lateral walls of the chest cavity of man are composed of the:

13. When you inhale, the diaphragm?

14. Which of the following changes will increase the body’s rate of carbon dioxide excretion into the alveoli?