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运用化学方程式进行计算是化学教学中的一个重点内容,而计算速度的快慢以及结果的准确率,往往取决于对化学方程式掌握的熟练程度、对化学方程式本质的理解和对化学方程式中物质间内在关系的挖掘。下面就如何灵活运用化学方程式进行快速解题,谈一谈自己的见解。 相似文献
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Characteristics of photosynthesis in rice plants transformed with an antisense Rubisco activase gene
INTRODUCTION Ribulose-1,5-bisphosphate carboxylase/oxy-genase (Rubisco) is a key enzyme that initiates bothphotosynthetic and photorespiratory carbon me-tabolism. However, Rubisco has to be activated andcarbamylated to become catalytically competent.Rubisco activase (RCA) can alter the activity ofRubisco by facilitating the dissociation of tightlybound sugar phosphates from Rubisco in a processthat requires ATP hydrolysis. RCA, a chloroplastprotein encoded by a nuclea… 相似文献
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INTRODUCTION Leaf senescence is a kind of programmed cell death (PCD) in plants that is highly controlled by a genetically programmed process involving degrada-tion of cellular structures, decline of photosynthesis massive generation of active oxygen species (AOS) and mobilization of nutrients (Nam, 1997; Lim et al.,2003). Many environmental factors have been shown to play a role in causing the photosynthetic decline to lead to premature senescence. Leaves exposed to ultraviolet radia… 相似文献
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研究型大学生物科学类人才培养模式探索 总被引：1，自引：0，他引：1
根据研究型大学人才培养目标,结合生物科学类人才培养实践,确立以人为本、追求卓越、志存高远、求是求真的本科教育理念,探索构建生物科学类人才培养模式。 相似文献
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Characteristics of photosynthesis in rice plants transformed with an antisense Rubisco activase gene
Transgenic rice plants with an antisense gene inserted via Agrobacterium tumefaciens were used to explore the impact of the reduction of Rubisco activase (RCA) on Rubisco and photosynthesis. In this study, transformants containing 15% to 35% wild type Rubisco activase were selected, which could survive in ambient CO2 concentration but grew slowly compared with wild type controls. Gas exchange measurements indicated that the rate of photosynthesis decreased significantly, while stomatal conductance and transpiration rate did not change; and that the intercellular CO2 concentration even increased. Rubisco determination showed that these plants had approximately twice as much Rubisco as the wild types,although they showed 70% lower rate of photosynthesis, which was likely an acclimation response to the reduction inRubsico activase and/or the reduction in carbamylation. 相似文献
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研究型大学实验教学创新平台的构建 总被引：6，自引：3，他引：6
浙江大学生物实验教学中心通过积极倡导"以人为本、整合培养、求是创新、追求卓越"的教育新理念,大力推进创新教育,增强学生创新能力,初步构建"以学生为主体、教师为主导,分层次、多模块、开放与创新"的实验教学创新平台,取得了可喜的教学效果。 相似文献
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