Biology Practice: The Respiratory System (Mock Test 3 - Advanced)
1. Which component of the blood is primarily responsible for carrying oxygen to the body cells?
2. When oxygen combines with haemoglobin, it forms a temporary compound called:
3. What is the approximate percentage of Oxygen in EXPIRED air?
4. During Exhalation, the internal air pressure in the lungs ________ to push air out.
5. Which process involves the breakdown of food to release energy inside the mitochondria?
6. The millions of Alveoli in the lungs provide a large ________ for efficient gas exchange.
7. Which gas is considered a "Variable" in air and increases significantly in expired air?
8. What happens to the "Rib cage" during the process of Inhalation?
9. "Fermentation" is another name for anaerobic respiration in which organism?
10. Which part of the brain controls the rate of breathing automatically?
11. Why is breathing through the mouth considered unhealthy compared to the nose?
12. The percentage of Nitrogen in inhaled air is 79%. What is it in exhaled air?
13. Which of the following is NOT a symptom of Tuberculosis (TB)?
14. The total number of lobes in both human lungs combined is:
15. What is the physical reason why lime water turns milky when we blow into it?
16. The narrowest tubes in the lung passage before the air sacs are called:
17. Which phase of respiration involves the transport of gases by the blood?
18. The "Adam's Apple" in men is actually the protruding part of the:
19. We feel "breathless" after running because our body needs to:
20. Which of these is the correct sequence of air travel during inhalation?