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植物生理学实验课教学改革初探 总被引:1,自引:0,他引:1
植物生理学是生物科学专业主干必修课,实验课教学是植物生理学教学的重要组成部分。随着生物技术与生命科学的飞速发展,有很多前沿领域的研究与成果不断渗透进入这一学科,因此其内容也在不断更新和充实。在这种时代形势下,对该学科的实验课内容、形式及模式进行更新、调整或改革以让学生尽可能多地掌握现代生物学技术,与今后的实际工作中尤其是继续从事科学研究的要求不脱节,是很多高校同仁的共识。我校作为一所综合性大学,我们根据本学校的实际情况,对植物生理实验课教学内容进行了更新与改革,现就大家关注的几个方面的具体做法,与同行们切磋。 相似文献
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2009年6月2日,国务院办公厅颁布了《促进生物产业加快发展的若干政策》(以下简称《政策》)。该政策的制定是我国在新世纪把握新科技革命战略机遇.全面建设创新型国家的重大举措.也是应对国际金融危机、促进经济平稳较快发展一揽子计划的重要组成部分。我国必须抓住世界生物科技革命和产业革命的机遇.将生物产业培育成为我国高技术领域的支柱产业。 相似文献
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蕨类植物是一类通过孢子进行繁殖的隐花维管植物,是植物界的主要组成部分之一,具有重要的生态、科研与经济价值。台湾多山的地形特点以及丰富多样的气候和植被类型,孕育了种类繁多的蕨类植物,一直是蕨类研究的热点地区。2011年3月,台湾辜严倬云植物保种中心和远流出版 相似文献
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细胞是生物体结构和功能的基本单位,在其生命活动的舞台上,它会展现增殖、分化、衰老和凋亡等一系列行为变化。细胞增殖是高中生物学新课程必修模块“分子与细胞”的一个组成部分,本文主要阐述有关细胞增殖的教学组织。 相似文献
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Myofibrillogenesis, the process of sarcomere formation, requires close interactions of sarcomeric proteins and various components of sarcomere structures. The myosin thick filaments and M-lines are two key components of the sarcomere. It has been suggested that myomesin proteins of M-lines interact with myosin and titin proteins and keep the thick and titin filaments in order. However, the function of myomesin in myofibrillogenesis and sarcomere organization remained largely enigmatic. No knockout or knockdown animal models have been reported to elucidate the role of myomesin in sarcomere organization in vivo. In this study, by using the gene-specific knockdown approach in zebrafish embryos, we carried out a loss-of-function analysis of myomesin-3 and slow myosin heavy chain 1 (smyhc1) expressed specifically in slow muscles. We demonstrated that knockdown of smyhc1 abolished the sarcomeric localization of myomesin-3 in slow muscles. In contrast, loss of myomesin-3 had no effect on the sarcomeric organization of thick and thin filaments as well as M- and Z-line structures. Together, these studies indicate that myosin thick filaments are required for M-line organization and M-line localization of myomesin-3. In contrast, myomesin-3 is dispensable for sarcomere organization in slow muscles. 相似文献
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Plant centromeres are generally composed of tandem arrays of simple repeats that form a complex chromosome locus where the kinetochore forms and microtubules attach during mitosis and meiosis. Each chromosome has one centromere region, which is essential for accurate division of the genetic material. Recently, chromosomes containing two centromere regions (called dicentric chromosomes) have been found in maize and wheat. Interestingly, some dicentric chromosomes are stable because only one centromere is active and the other one is inactivated. Because such arrays maintain their typical structure for both active and inactive centromeres, the specification of centromere activity has an epigenetic component independent of the DNA sequence. Under some circumstances, the inactive centromeres may recover centromere function, which is called centromere reactivation. Recent studies have highlighted the important changes, such as DNA methylation and histone modification, that occur during centromere inactivation and reactivation. 相似文献