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Answer ALL questions. Write your answers in the spaces provided.
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1 (a) Figure 1 shows a diagram of mucus‑producing goblet cells and ciliated epithelial
cells in the airways of the lungs.
ciliated
epithelial
mucus-producing cell
goblet cell
(Source: © K.K.T Madhusanka/Shutterstock)
Figure 1
Describe how pathogens are removed from the airways by ciliated epithelial cells.
(2)
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(b) During a race, athletes respire aerobically and anaerobically.
Figure 2 shows an athlete after a race.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(Source: © voronaman/Shutterstock)
Figure 2
Explain how aerobic respiration provides energy for running.
(2)
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Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 (a) Figure 1 shows a diagram of mucus‑producing goblet cells and ciliated epithelial
cells in the airways of the lungs.
ciliated
epithelial
mucus-producing cell
goblet cell
(Source: © K.K.T Madhusanka/Shutterstock)
Figure 1
Describe how pathogens are removed from the airways by ciliated epithelial cells.
(2)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
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(b) During a race, athletes respire aerobically and anaerobically.
Figure 2 shows an athlete after a race.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
(Source: © voronaman/Shutterstock)
Figure 2
Explain how aerobic respiration provides energy for running.
(2)
. . . . . . . . . . . .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ ................ . . . . . . . . . . . . . . . . . . . .
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