2002 年

生物 · 共 60 題 · 點擊選項即時核對答案

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31.

Questions 30 and 31 refer to the graphs below, which show the rate and depth of breathing of three persons during a fitness test :

Question figure

The three persons are a cigarette smoker, a non-smoker and a professional runner. Which of the following correctly identifies the person represented by each of the graphs ?

Graph 1Graph 2Graph 3
smokernon-smokerrunner
non-smokerrunnersmoker
non-smokersmokerrunner
runnersmokernon-smoker
32.

Questions 32 and 33 refer to the graph below, which shows the change in lactic acid concentration in the blood of a person when he performed vigorous exercise :

Question figure

The person stopped doing exercise at

33.

Questions 32 and 33 refer to the graph below, which shows the change in lactic acid concentration in the blood of a person when he performed vigorous exercise :

Question figure

Which of the following lead to the change in lactic acid concentration in the blood during the 10th to 20th minute ?

(1)an increase in the breakdown of glucose
(2)a reduction in oxygen supply to the muscles
(3)an increase in energy demand of the muscles
34.

Which of the following cell types is/are capable of locomotion ?

(1)ovum
(2)phagocyte
(3)motor neurone
35.

Which of the following can account for the appearance of the red blood cells shown in the photomicrograph below ?

Question figure
36.

Animal species X has a smaller risk of extinction than animal species Y in nature. Which of the following is the least probable explanation for this ?

37.

Organic fertilizers are more environmentally friendly than inorganic fertilizers because organic fertilizers

38.

Questions 38 and 39 refer to the passage below : Atherosclerosis is a condition in which the smooth internal lining of blood vessels becomes covered with fatty deposits. This causes a reduction in the diameter of the blood vessels. The fatty deposits often cause the formation of blood clots which further narrow the blood vessels and eventually block them completely. Atherosclerosis is becoming more common in many countries and this has led to an increase in the incidence of heart attack.

Narrowing of blood vessels of the heart may lead to heart attack because

39.

Questions 38 and 39 refer to the passage below : Atherosclerosis is a condition in which the smooth internal lining of blood vessels becomes covered with fatty deposits. This causes a reduction in the diameter of the blood vessels. The fatty deposits often cause the formation of blood clots which further narrow the blood vessels and eventually block them completely. Atherosclerosis is becoming more common in many countries and this has led to an increase in the incidence of heart attack.

Which of the following are possible causes for the increase in number of atherosclerosis cases ?

(1)excessive intake of fatty food
(2)insufficient physical exercise
(3)insufficient bile secretion
40.

Red tide can be harmful to marine organisms because the algae in the red tide

(1)may produce toxic substances.
(2)compete with marine animals for food.
(3)use up a lot of the oxygen in water at night.
生物 2002 年 DSE、CE 選擇題(第 4 頁) | dselib