高中生物必修一四第章第三节物质跨膜运输方式

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1、第3节物质跨膜运输的方式Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.【知识准备】细胞膜的结构蛋白质磷脂结构特点：功能特点：具有一定的流动性具有选择透过性Evaluationonly.CreatedwithAspose.Slidesfor.

2、NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.细胞膜（流动镶嵌模型）Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAsp

3、ose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.氧气，二氧化碳氮气，水苯，甘油，乙醇氨基酸葡萄糖核苷酸氢离子，钠离子、钾离子，钙离子、氯离子，镁离子、碳酸氢根合成的脂双层Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.

4、0.0.Copyright2004-2011AsposePtyLtd.主动运输协助扩散自由扩散生物小分子的跨膜运输方式请看动画Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.细胞外细胞内小分子物质细胞膜自由扩散高浓度低浓度如：水、氧气、二氧化碳

5、等气体，苯、胆固醇、甘油、乙醇等脂溶性物质Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.自由扩散特点：从浓度到浓度；载体蛋白的协助；实例：。高低不需要水、氧气、二氧化碳等气体，苯、胆固醇、甘油、乙醇等脂溶性物质Evaluationonly.C

6、reatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.细胞外细胞内细胞膜载体蛋白协助扩散高浓度低浓度如：葡萄糖进入红细胞Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright20

7、04-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.协助扩散特点：从浓度到浓度；载体蛋白的协助；如：葡萄糖进入红细胞高低需要Evaluationonly.CreatedwithAspose.Slidesfor.