生物 2010 年 DSE、CE 選擇題

1.

Which of the following statements about proteins are correct?

(1)Proteins are present in the cell membrane of both plant and animal cells.

(2)Proteins are mainly composed of the elements: carbon, hydrogen, nitrogen, and oxygen.

(3)Enzymes are denatured when they are exposed to a high temperature because of their protein nature.

2.

Which of the following statements about the nucleus is incorrect?

3.

Which of the following factors will affect the rate of diffusion?

(1)temperature

(2)concentration gradient

(3)size of particles involved

4.

The table below shows some features of three different animals.

Animal	Backbone	Moist body surfaces	Scales
P	✓	✓	✓
Q	✓	✓	✗
R	✗	✗	✗

Key: ✓ = present ✗ = absent These three animals could be

5.

The photograph below shows an organism found on the seashore.

Which group does this organism belong to?

6.

Which of the following is non-cellular?

7.

If all the decomposers in a habitat died out,

8.

Which of the following statements about photosynthesis is incorrect?

9.

Which of the following are the significance of photosynthesis?

(1)Different types of carbohydrates are synthesized for plants.

(2)The concentration of oxygen and carbon dioxide in the atmosphere can be maintained.

(3)The consumption of water in photosynthesis creates a transpiration pull for water transport in plants.

10.

A student wants to investigate the anaerobic respiration of yeast by the following set-up.

In order to investigate whether carbon dioxide is produced by the mixture, which of the following modifications is needed?