8.2 - 2015 June Q8
The diagram shows the human respiratory system.
(a) Ciliated cells are found in the trachea.
(i) Draw a diagram of a ciliated cell.
Label the cilia, the cell membrane and the nucleus. (4)
(ii) The smoke from cigarettes can prevent the normal functioning of cilia. Explain the effect that this could have on the health of a person who smokes cigarettes. (3)
(b) (i) Cigarette smoke contains substances that are harmful to the body.
Draw a straight line from each substance to its harmful effect on the body. (2)
(i) Draw a diagram of a ciliated cell.
Label the cilia, the cell membrane and the nucleus. (4)
(ii) The smoke from cigarettes can prevent the normal functioning of cilia. Explain the effect that this could have on the health of a person who smokes cigarettes. (3)
(b) (i) Cigarette smoke contains substances that are harmful to the body.
Draw a straight line from each substance to its harmful effect on the body. (2)
(ii) Explain why the birth weight of babies born to mothers who smoke tends to be lower than those born to mothers who are non-smokers. (3)