2005 年
生物 · 共 60 題 · 點擊選項即時核對答案
Questions 1 to 3 refer to the following experiments: Two test tubes containing 5 cm³ of hydrogen peroxide solution and 1 cm³ of catalase solution respectively were kept at 30°C for 30 minutes. The content of the two tubes were then mixed and maintained at the same temperature, and the amount of oxygen released was recorded for 5 minutes. The same experiment was repeated at 40°C. The results are shown in the graph below:
The initial rate of oxygen production at 40°C is higher than that at 30°C because
Questions 1 to 3 refer to the following experiments: Two test tubes containing 5 cm³ of hydrogen peroxide solution and 1 cm³ of catalase solution respectively were kept at 30°C for 30 minutes. The content of the two tubes were then mixed and maintained at the same temperature, and the amount of oxygen released was recorded for 5 minutes. The same experiment was repeated at 40°C. The results are shown in the graph below:
Which of the following is a correct interpretation of the graph?
Questions 1 to 3 refer to the following experiments: Two test tubes containing 5 cm³ of hydrogen peroxide solution and 1 cm³ of catalase solution respectively were kept at 30°C for 30 minutes. The content of the two tubes were then mixed and maintained at the same temperature, and the amount of oxygen released was recorded for 5 minutes. The same experiment was repeated at 40°C. The results are shown in the graph below:
A third experiment was carried out as before but the contents were kept at 90°C. Which of the following would best indicate the result of this experiment?
Eskimos are a people living in the Arctic regions. Their diet is rich in fat because
The lining of the nasal cavity is covered with a thin film of mucus. What is the importance of the mucus?
Questions 6 and 7 refer to the set-up below, which is used to estimate the rate of respiration of mealworms:
At the end of the experiment, the liquid drop was found to be at position X. The movement of the liquid drop indicated
Questions 6 and 7 refer to the set-up below, which is used to estimate the rate of respiration of mealworms:
What modification should be made in the above set-up in order to prepare a control for this investigation?
Timber is considered as a kind of renewable resource because
Which of the following correctly matches the cell types with their features?
| Cell type | Feature | |
|---|---|---|
| (1) | xylem vessel | tube-like cell with no nucleus |
| (2) | mesophyll cell | thin-walled cell with chloroplasts |
| (3) | root epidermal cell | thin-walled cell with cuticle |
Water is a raw material for photosynthesis. In which of the following substances will the hydrogen and oxygen from water be found at the end of photosynthesis?
| Hydrogen | Oxygen | |
|---|---|---|
| carbohydrate | oxygen gas | |
| carbohydrate | carbohydrate | |
| hydrogen gas | oxygen gas | |
| hydrogen gas | carbohydrate |