1990 年
生物 · 共 30 題 · 點擊選項即時核對答案
Which of the following statements about tapeworms is correct ?
Nitrogen compounds are required by plants to form
Which of the following processes does NOT release carbon dioxide into the atmosphere ?
The following apparatus is used to compare the amounts of a certain component in exhaled and inhaled air :
When a student exhales air through M, which of the following combinations is correct ?
| Clip X | Clip Y | Colour of indicator in tube 1 | Colour of indicator in tube 2 | |
|---|---|---|---|---|
| closed | open | yellow | red | |
| closed | open | red | yellow | |
| open | closed | red | yellow | |
| open | closed | yellow | red |
Enzymes CANNOT work properly at high temperatures because
Questions 16 and 17 refer to the experimental set-up shown below. Each tube contains the same volume of an indicator solution but a different number of leaves. The tubes are uniformly illuminated.
The indicator solution changes from red to purple when it becomes less acidic. In which of the tubes does the indicator solution change from red to purple most rapidly ?
Questions 16 and 17 refer to the experimental set-up shown below. Each tube contains the same volume of an indicator solution but a different number of leaves. The tubes are uniformly illuminated.
If a similar set-up were kept in the dark for several hours, which tube would contain most oxygen at the end of the experiment ?
Using the above experimental set-up, which of the following substances present in cigarette smoke can be detected ?
After a car accident, a man had difficulty in balancing himself when walking but he could still hear well. Which of the following structures might have been damaged ?
Questions 20 and 21 refer to the diagram below which shows the inner lining of a certain part of the human body :
This inner lining can be found in