物质跨膜运输的实例说课稿六篇(模板)

第页共页物质跨膜运输的实例说课稿六篇(模板)物质跨膜运输的实例说课稿篇一教材的地位和作用本章是介绍细胞的物质输入和输出，第三章已经介绍了细胞膜的化学组成和构造及大致功能，第四章前两节已学习了生物膜的构造模型和物质跨膜运输实例。本节着重介绍细胞膜控制物质进出这一重要功能，包括小分子或离子进出细胞的方式和大分子物质进出细胞的方式。通过对几种跨膜运输方式的探究，并运用数学坐标图来表达三种方式的规律和特征，可以培养学生对图表数据的解读才能，即信息解读和知识迁移转化的才能。2。教学目的根据课程标准结合本教材的特点，确定如下目的：知识目的：说明物质进出细胞的方式才能目的：培养学生信息解读和知识迁移转化的才能情感目的：通过对生命现象的阐释，体会生命的物质性，养成合作学习的意识，培养严谨的科学精神。3．重难点重点就是物质跨膜运输的三种方式，其中两种被动运输方式，学生已有扩散和浸透的知识根底，较易理解。难点是主动运输。4。教材处理学生学过呼吸运动中肺换气、肺部气体交换，已有对物质交换的理解。通过对前几章的学习，学生已经具备了细胞膜的构造、水分跨膜运输实例的根底，掌握了蛋白质多样性的知识，同时具备了一定的认知才能。但学生对跨膜运输方式还停留在感性认识层次。本节依次讲解被动运输方式、主动运输方式及意义。教法：采用老师主导，学生自主，合作和交流讨论相结合的方法。总体思路为：展示现象→提出问题→解释原理→总结概念，使学生综合运用到课程标准所提到的"观察，描绘，比拟，概括，分析^p，解读图表"等技能，并配以多媒体辅助教学。2。学法：主动运输是本节课的教学重点和难点，可采用比照的方式进展物质出入方式的学习，通过观察讨论的方式让学生自己找出被动运输和主动运输的主要区别来掌握。3。教学手段：课件显示运输方式动画〔一〕复习细胞膜的成分和构造，利用“问题讨论”用多媒体展示提出问题。设立问题情景，创设物质跨膜运输的思维平台，为学生的有效发散思维提供背景，培养学生的主动思维才能，为进一步打破难点做铺垫，激发学生学习激情。〔二〕几种物质运输方式1。小分子和离子的跨膜运输〔1〕多媒体展示扩散现象，引出物质运输的两种方式被动运输和主动运输的概念，让学生分析^p水分子进入细胞的原因和方式，总结出自由扩散的概念，多媒体动画展示自由扩散的过程，组织学生讨论，得出自由扩散的特点。该局部内容简单，通过多媒体展示，使抽象内容形象化，便于学生理解。此时比拟扩散和浸透两概念的异同。〔2〕进一步提出问题：葡萄糖不能通过人工合成的脂质双分子层，但对于细胞来说，葡萄糖又是必需的，它是怎样通过细胞膜进入细胞的？激发学生的学习兴趣和探究激情，让学生尝试作出解释，再指出载体蛋白的作用，总结出协助扩散的概念，多媒体动画展示协助扩散的过程，学生有了自由扩散知识的根底，很容易得出协助扩散的特点，此时引导学生自主列表比照两者异同，并答复以下问题：①自由扩散与协助扩散需要消耗能量吗②自由扩散与协助扩散有什么一样点？有什么不同点？③自由扩散与协助扩散为什么被称为被动运输？组织学生考虑和讨论，得出答案。〔3〕更进一步提出问题：假如只有被动运输能满足细胞生命活动的需要吗多媒体展示相关资料。组织学生分组讨论：为什么这些物质可以逆浓度梯度运输呢？师就讨论结果矫正，精讲点拨。主动运输的概念。多媒体动画展示主动运输的过程，引导学生得出主动运输的特点。并组织学生分析^p三种运输方式异同。继续完成填表。提出问题：影响自由扩散、协助扩散和主动运输速度的主要因素各是什么？画出细胞对某物质的自由扩散、协助扩散和主动运输速度随细胞外浓度的改变而变化的曲线图。组织学生分组讨论，并作图展示各组成果。本环节稳固理论知识是对课本知识扩展和对重点，难点内容的深化理解和总结，只有理解了三种运输方式的异同，才能完本钱环节教学任务，既突显书本知识，又培养学生的团结协作的精神，进步学生制作图表的才能和抽象化思维才能的形成。2。大分子的运输引导学生回忆分泌蛋白的分泌过程，得出胞吐现象，提出问题：白细胞是如何吞噬病菌的。显示有关图片。比拟其与跨膜运输方式的不同。提出问题：胞吞和胞吐表达了细胞膜构造的特点是什么3。与社会的联络简单描绘囊性纤维病的机理以及病毒感染中，药物比拟难杀灭病毒的原因4。技能训练指导学生就《技能训练》局部进展讨论〔三〕、反应练习1。画出三种运输方式随细胞外浓度的改变而变化的曲线图。2。当堂检测题针对物质跨膜运输方式的特点和不同而设计，让学生考虑完成具有针对性的练习，进展知识稳固和教学效果反应，及时纠正错误的理解和片面的认识。本节课符合新课标的理念，改变了以往填鸭式的教法，表达了老师为主导，学生为主体的教学形式。这局部内容本身并不难，学生在学习的过程中相对轻松，但是假如不把新旧知识进展整合，在解题的时候还是存在一定困难。在分组讨论中，虽然学生的答复不一定完好，但还是从多角度对学生给予积极的肯定，从而增强了学生的自信心。在教学节奏的把握上，由于学生讨论和交流比拟花费时间，容易出现前紧后松或是前松后紧的情况，因此在时间上应当注意控制。物质跨膜运输的实例说课稿篇二各位老师：物质跨膜运输的实例说课稿篇三��î»ï¿½ï¿½ê¦ï¿½ï¿½物质跨膜运输的实例说课稿篇四������î»ï¿½ï¿½ê¦ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ã¡ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ëµï¿½ï¿½ï¿½ï¿½ä¿ï¿½ç¡ï¿½ï¿½ï¿½ï¿½ê¿ï¿½ä¤ï¿½ï¿½ï¿½ï¿½ä·ï¿½ê½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½â³ì½ì²äµï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ý£ï¿½öªê¶ï¿½ï¿½è»ï¿½ï¿½ï¿½ï¿½ï¿½ç²ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½õ£ï¿½í¨ï¿½ï¿½ï¿½ï¿½ï¿½úµï¿½ñ§ï°ï¿½ü¸ï¿½ï¿½ï¿½ò»ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½í½ï¿½ï¿½í¼ï¿½ï¿½ï¿½ï¿½ï¿½ýµï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ú±ï¿½ï¿½ú£ï¿½ï¿½ò½ï¿½ï¿½ï¿½"�ì²ä·ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ì£ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï°ï¿½ï¿½ï¿½ü½á·´ë¼"�����������������������������1���ì²äµäµï¿½î»ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ê¿ï¿½ä¤ï¿½ï¿½ï¿½ï¿½ä·ï¿½ê½ï¿½ï¿½ï¿½ï¿½ï¿½ë½ì°ï¿½ï¿½ï¿½ï¿½ò»ï¿½ï¿½ï¿½äµï¿½ï¿½ï¿½ï¿½úµï¿½ï¿½ï¿½ï¿½ý£ï¿½ï¿½ï¿½ä£ï¿½ï¿½ï¿½3�ñ¾ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¸ï¿½ï¿½ä¤ï¿½ä»ï¿½ñ§ï¿½ï¿½éºï¿½ï¸ï¿½ï¿½ä¤ï¿½á¹¹ï¿½ô¼ï¿½ï¿½ï¿½ï¿½âµä¹ï¿½ï¿½ü£ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ø½ï¿½ï¿½ï¿½ï¸ï¿½ï¿½ä¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ê½ï¿½ï¿½ï¿½ï¿½ï¿½ò»ï¿½ï¿½òªï¿½ï¿½ï¿½ü£ï¿½ï¿½ï¿½ï¿½ï¿½ð¡ï¿½ï¿½ï¿½ó»ï¿½ï¿½ï¿½ï¿½ó½ï¿½ï¿½ï¿½ï¸ï¿½ï¿½ï¿½ä·ï¿½ê½ï¿½í´ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ê½ï¿½ï¿½ï¿½ï¸ï¿½ï¿½ï¿½ä·ï¿½ê½ï¿½ï¿½í¨ï¿½ï¿½ï¿½ô¼ï¿½ï¿½ö¿ï¿½ä¤ï¿½ï¿½ï¿½ä·½ê½ï¿½ï¿½ì½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½í¼ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ö·ï¿½ê½ï¿½ä¹ï¿½ï¿½éºï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½í¼ï¿½ï¿½ï¿½ï¿½ï¿½ýµä½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¢ï¿½ï¿½ï¿½ï¿½ï¿½öªê¶ç¨ï¿½ï¿½×ªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½â²¿ï¿½ï¿½ï¿½ï¿½ï¿½ýºï¿½ç°ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½"���úµï¿½ï¿½×µäºï³éºï¿½ï¿½ï¿½ï¿½ï¿½"�ð¹ï¿½ï¿½ï¿½ï¿½äµø·ï¿½ï¿½ï¿½í¬ê±ï¿½ï¿½ï¿½ç¶ï¿½ï¿½ï¿½ï¿½ï¿½ä¤ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ôµï¿½ò»ï¿½ï¿½ï¿½üºãµï¿½ï¿½ï¿½ö¤ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¸ï¿½ï¿½ï¿½ç»ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ïµí³ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½òªï¿½ï¿½ï¿½ï¿½ï¿½å¡£ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ý½ï¿½ñ§ï¿½ï¿½ùµï¿½òªï¿½ï¿½í½ì²äµä¾ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ý£ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ðµï¿½öªê¶ë®æ½ï¿½ï¿½ï¿½â¶¨ï¿½ï¿½ï¿½ï¿½ï¿½ð¼ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ä¿ï¿½ê£ºï¿½ï¿½ï¿½ï¿½ï¿½ï¿½1��öªê¶ï¿½ë¼¼ï¿½ï¿½ä¿ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½a���ü¾ï¿½ï¿½ï¿½ëµï¿½ï¿½ï¿½ï¿½ï¿½ê¿ï¿½ä¤ï¿½ï¿½ï¿½ä·½ê½ï¿½ï¿½ï¿½ï¿½ï¿½í¼ï¿½ï¿½øµã¡£ï¿½ï¿½ï¿½ï¿½b��í¨ï¿½ï¿½ñ§ï°ï¿½ï¿½ï¿½ô¼ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½â²¢ëµï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ä·½ê½ï¿½ï¿½ï¿½ï¿½í¬ï¿½ã¡£ï¿½ï¿½ï¿½ï¿½c���������������ï¸ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½å¡£ï¿½ï¿½ï¿½ï¿½d����è·ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½í¼ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½2������ä¿ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ë¼ï¿½ï¿½ï¿½ï¿½ñ§ï°ï°ï¿½ß£ï¿½ï¿½ï¿½ï¿½ë¼¯ï¿½ï¿½ï¿½ï¿½ï¿½ûºíºï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ì½ï¿½ï¿½ï¿½ä¿ï¿½ñ§ì¬ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½3�����ä¿ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½a����������ñ§ï°ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï°ï¿½ï¿½ï¿½ï¿½ê¶ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï½ï¿½ï¿½ä¿ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½b��í¨ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ä²ï¿½ï¿½í£ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½î°ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½æ£¬ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï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