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全国新课标2012理综29题,通过玉米种子萌发中有机物含量的变化,考查学生对呼吸作用的掌握情况。一、试题分析及解答所需知识1.29题的题意解析:本题以玉米种子萌发为材料,考查植物细胞呼吸最常利用的能源物质葡萄糖的来源及植物细胞呼吸速率的测定,胚乳在种子萌发中的作用及营养物质去向。2.解答本题考生应有的知识储备(1)淀粉水解成
National New Curriculum Standard 2012 Management 29 questions, through the changes in the content of organic matter in the germination of corn seeds, examine the students grasp of the respiratory effects. First, the test analysis and answer the required knowledge 1.29 the title of the problem analysis: The title of the corn seed germination as a material to test the plant cells to breathe the most commonly used energy source of glucose and plant cell respiration rate determination of endosperm in the seed germination The role of nutrients and whereabouts. 2. answer the question candidates should have the knowledge reserve (1) starch hydrolysis into