2016生物高中必修3第五章第四节课件1.ppt
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生命系统的信息观 细胞生命系统(细胞内部信息流) 例:DNA→mRNA→蛋白质 个体生命系统 例:神经调节中的电信号、化学信号 激素调节中的激素 免疫调节中的抗原信号等 海豚的回声定位 鸟迁徙行为中对方向的判断(太阳) 鸽子喙部发现感应磁场器官 识途靠地磁导航 蛇的热感受器(红外线感受器) 鱼的侧线(感知水流速度和方向) 蚊触须上的(二氧化碳和剧烈运动时产生的乳酸 )化学探测器 求偶行为 * 第4节 生态系统的信息传递 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 问题探讨 ?思考: 1.什么是信息? 2. 信息是怎么传 递的? 3.你还能举出生 活中信息传递的 例子吗? Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 第4节 生态系统的信息传递 信息:一般将可以传播的消息、情报、 指令、数据和信号等称作信息。 ? 生命系统的信息有哪些种类呢? Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. ? 生态系统的信息有哪些种类呢? Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. [案例1 ] 一、生态系统中信息的种类 ? 下例信息各属于哪种信息类型? 物理信息 物理信息:生态系统中的光、声、颜色、温度、湿度、磁力等,通过物理过程传递的信息。这些信息往往表达了吸引异性、种间识别、威吓和警告等作用。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011
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