Biology Practice: Respiratory System (Mock Test 5 - Ultimate Comprehensive)
1. The primary purpose of the cartilaginous rings in the trachea is to:
2. Which gas is used up during the process of aerobic respiration?
3. The exchange of gases in the lungs occurs across the thin walls of the:
4. During inhalation, the diaphragm moves ______ to increase chest volume.
5. The chemical product of anaerobic respiration in human muscles that causes fatigue is:
6. The protective double-layered membrane of the lungs is called:
7. Which part of the brain primarily regulates the involuntary rate of breathing?
8. In the respiration equation, $C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + X$. What does 'X' represent?
9. The process of expiration involves the ribs moving:
10. Blood entering the lungs is rich in ______ and poor in ______.
11. The 'Vital Capacity' of a healthy adult human is roughly:
12. Why is the left lung slightly smaller and possess only two lobes?
13. Which chemical is used to test for the presence of $CO_2$ in exhaled air?
14. The 'Residual Volume' is the volume of air that:
15. Combustion and Respiration are similar because both:
16. The average breathing rate of an adult human at rest is:
17. Hemoglobin has a very high affinity for which toxic gas?
18. Internal respiration refers to the exchange of gases between:
19. In yeast, anaerobic respiration produces ______ as a byproduct.
20. The tiny hairs in the nose called 'Cilia' serve to: