2009年普通高校招生统一考试福建卷(理综)（2009 general college entrance examination fujian volume (hei)）.doc

2009年普通高校招生统一考试福建卷(理综)（2009 general college entrance examination fujian volume (hei)） 2009 general college entrance examination fujian volume (hei) Relative atomic mass: H 1 C 12 N 14 O 16 Mg 24 Zn 65 The first 鈪?(choice a total of 108 points) It is a total of 108 points for each of the 18 questions. 1. In the four choices given in each question, there is only one option that meets the requirements of the subject. 1. The following statement about the experiment is correct A. In the observation of the mitosis experiment of onion cells, the root tip of the dissociation, rinsing and dyeing is placed on the slide, which can be examined with A light cover B. to count the yeast, use a straw to absorb the counting chamber of the cells and the edges of the cells, which are covered by a small glass C. some organic solvents, such as anhydrous ethanol, should be added in the experiment of chloroplast pigment extraction D. Check whether the pear juice in the test tube has glucose, but after adding the right amount of the reagent, shake it well and observe the color change 2. The following statements about the stability of the ecosystem are incorrect A. the ecosystem has self-regulation ability, which is the basis of the stability of the ecosystem B. Coordination of internal structure and function of ecosystem can improve the stability of ecosystem C. Biodiversity plays an important role in maintaining the stability of the ecosystem and reflects its indirect value D. The more components of an ecosystem, the more complex the food network, the stronger the stability of the ecosystem resilience 3. The mitosis and meiosis of cells may produce inheritable variation, in which only the variation in meiosis is A. chromosomes do not separate or move to the poles, resulting in A mutation in the number of chromosomes The non-homologous pairs of chromosomes, which lead to genetic recombination C. Chromosome replication is influenced by mutagenic factors, resulting in gene mutation D. nonhom