生物 2003 年 DSE、CE 選擇題（第 4 頁）

31.

Questions 29 to 31 refer to the diagrams below. Diagram I shows the human ear and diagram II shows a section of the human brain :

A woman survived a traffic accident but her structure P was partly damaged. Which of the following abilities would probably be lost ?

32.

A balanced diet helps to prevent

33.

Questions 33 and 34 refer to the diagram below, which shows some muscles of the leg :

Which of the following muscles are flexors ?

34.

Questions 33 and 34 refer to the diagram below, which shows some muscles of the leg :

If structure X is broken, which of the following will occur ?

35.

Questions 35 and 36 refer to the diagram below, which shows the change in the heat distribution of a person’s body when the air temperature drops from 25°C to 15°C :

Which of the following are responsible for the change in the skin temperature ?

(1)increase in heat loss

(2)decrease in sweat secretion

(3)constriction of the skin arterioles

36.

Questions 35 and 36 refer to the diagram below, which shows the change in the heat distribution of a person’s body when the air temperature drops from 25°C to 15°C :

Which of the following will occur if the person stays at 15°C for 30 minutes without additional clothing ?

37.

Questions 37 to 39 refer to the diagram below, which shows the structure of a human nephron and its associated blood vessels :

At sites 1 and 2, there is movement of glucose between the blood and the fluid in the nephron. Which of the following correctly states the processes responsible for the movement of glucose at these two sites ?

	Site 1	Site 2
	filtration	active transport
	diffusion	diffusion
	filtration	osmosis
	diffusion	active transport

38.

Questions 37 to 39 refer to the diagram below, which shows the structure of a human nephron and its associated blood vessels :

In a healthy person, which of the following substances can be found in the blood of the renal vein ?

(1)urea

(2)glucose

(3)mineral salts

39.

Questions 37 to 39 refer to the diagram below, which shows the structure of a human nephron and its associated blood vessels :

Which of the following correctly states and explains the change in concentration of the fluid in site 3 of a person after a basketball match ?

	Change in fluid concentration	Reason
	decrease	a smaller proportion of water is reabsorbed
	decrease	less mineral salts are reabsorbed
	increase	a greater proportion of water is reabsorbed
	increase	more mineral salts are reabsorbed

40.

Scientists found that the concentration of carbon dioxide in the atmosphere has changed from an average of 315 ppm in 1959 to 370 ppm in 2000. Which of the following may be a cause of this change ?