Q34 of 367 Page 47

Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.

During the breathing process when air is taken in and let out, some of the air remains inside the lungs to provide sufficient time for oxygen absorption into the blood and release of carbon dioxide from the blood.


More from this chapter

All 367 →
32

Define breathing. State the differences between breathing and respiration.

 33

What are the different ways in which glucose is oxidised to provide energy in various organisms? Give one example of each.

 35

Explain why, it is dangerous to inhale air containing carbon monoxide.

 36

Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.