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biology 0610printed 148 · PDF 148
328 pagesrevision 46933
printed 148 · PDF 148
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Aitchison College Academic Resources.
The diagram shows some ciliated cells from the trachea.
What is the function of the parts labelled X?
detecting stimuli
B- exchanging gases
C moving mucus
D trapping bacteria
6.
What are the functions of the diaphragm and the cilia in the human gas exchange system?
diaphragm cilia
A contracts to cause breathing in carry mucus to the throat
B | contracts to cause breathing out trap bacteria from the air
Cc relaxes to cause breathing in filter dust from the air
D relaxes to cause breathing out produce mucus
7.
The diagram shows someone blowing up a balloon.
What percentage of the gas in the balloon is carbon dioxide?
A 0.04% B 04% C 4.0% D 40%
8.
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