Question

Do not write

outside the
box
9
Figure 12 shows exchange surfaces in the lungs.
Figure 12
Oxygen
Cell at lung surface
Blood vessel
Red blood cell
(transports oxygen)
09
1
Explain how one feature shown in Figure 12 increases the rate of oxygen uptake
by the blood.
[2 marks]

Answer 1

Red blood cells - help in transporting oxygen other all the body parts. _ halp to increase the tamprecature in the all the body parts