细胞的多样性与统一性

细胞的多样性与统一性 细胞的多样性和统一性 ——教学 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 一(教材 分析 定性数据统计分析pdf销售业绩分析模板建筑结构震害分析销售进度分析表京东商城竞争战略分析 本节选自新课程 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 高一生物第一章第二节内容。初中已经学习和生物和细胞的关系，前一节也学习生命系统的结构层次。本节在了解了一系列的结构层次上，我们将从最小的层次细胞入手，更深入的学习细胞的多样性和统一性，从细胞学说的建立得到细胞的地位，从原核生物与真核生物的比较中进一步巩固细胞的地位，为以后一系列细胞内的生命活动的学习奠定理论基础。 二(学情分析 高中学生对于细胞并不陌生，但不能系统的总结细胞的多样性和统一性，对于细胞的的地位认识不够。但能通过分析、总结资料、得出相应的结论。 三(教学目标 1.知识与技能 能说出真核细胞与原核细胞的区别和联系。 能说出细胞学说的内容。 2.过程与方法 通过分析图片，运用比较的方法进行总结。 分组讨论分析细胞学说的建立的文字资料，总结出细胞的地位。 3.情感态度与价值观 认同细胞的多样性和统一性 四(教学重难点 1.重点 细胞的地位——细胞学说的分析。 2.难点 细胞多样性和统一性的建构。 五(教学流程图 the second determination as a result. Results of two small The number. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results: when the ash is less than 1%, should not exceed 0.02% of the average results when the ash is more than 1%, should not exceed 2% of the average result. Protein from starch-determination of Kjeldahl nitrogen-1, define the content: formed by hydrolysis of starch and its derivatives in the sample of free amino acid content of nitrogen and ammonia-containing compounds. To the sample n samples of the original weight weight weight expressed as a percentage. Principle 2, in the presence of a catalyst, sulfuric acid starch and its derivatives and reaction products of alkali, and distilling ammonia release. Using boric acid solution collects, and then calibrated sulfuric acid solution titrated, get the volume of sulphuric acid consumed the number that can be converted into nitrogen. This method is suitable for ammonia content is greater than 0.01% (m/m) samples of starch and its derivatives; 3, reagent in the determination process, only use analytical grade reagent and distilled water, or at least the purity of water. Concentrated sulphuric acid: 96% (m/m), ρ 20 for 1.84g/mL. Sodium hydroxide solution: 40% (m/m), ρ 20 for 1.43g/mL. Boric acid solution: 20g/L. Catalyst: formed by the 97g and 3G of potassium sulfate anhydrous copper sulfate. Standard solution of sulphuric acid: about 0.02mol/L, or 0.1 mol/l standard solution. Indicator: by two 50% (v/v) alcohol solution of the neutral methyl red, cold saturated solution and a 50% (v/v) 情感教育副线 知识逻辑主线 探究活动副线 统一性和多样性的初步 认识:展示初中观察过图片回忆 活动1:.这些图片中分的各种细胞的图片，并 别有那些细胞,这些分别对其进行描述。 细胞都有什么结构特 点,他们哪些地方 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 现的是多样性,哪些总结:对同学们所描叙 是统一性, 的内容进行引导，初步 图总结出细胞的多样性和 片、统一性都表现在哪些方 文字面。 材料 的分活动2:细胞学说的建 析总立主要经历了那些阶 结 段,各个阶段的代表人细胞学说的分析:通过 物以及他们得出的结论对细胞学会说的分析， 是什么,细胞学说体现得出细胞的地位。 了细胞的多样性还是统 一性, 细胞的多样性和统一性在对细胞的多样性和统 的补充以及细胞额地位一性有一定认识后再通 的巩固:原核细胞和真过原核细胞与真核细胞比较 核细胞间的比较。 的比较进一步完善此观分析 点。 总结:细胞的地位。 六(过程设计 the second determination as a result. Results of two small The number. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results: when the ash is less than 1%, should not exceed 0.02% of the average results when the ash is more than 1%, should not exceed 2% of the average result. Protein from starch-determination of Kjeldahl nitrogen-1, define the content: formed by hydrolysis of starch and its derivatives in the sample of free amino acid content of nitrogen and ammonia-containing compounds. To the sample n samples of the original weight weight weight expressed as a percentage. Principle 2, in the presence of a catalyst, sulfuric acid starch and its derivatives and reaction products of alkali, and distilling ammonia release. Using boric acid solution collects, and then calibrated sulfuric acid solution titrated, get the volume of sulphuric acid consumed the number that can be converted into nitrogen. This method is suitable for ammonia content is greater than 0.01% (m/m) samples of starch and its derivatives; 3, reagent in the determination process, only use analytical grade reagent and distilled water, or at least the purity of water. Concentrated sulphuric acid: 96% (m/m), ρ 20 for 1.84g/mL. Sodium hydroxide solution: 40% (m/m), ρ 20 for 1.43g/mL. Boric acid solution: 20g/L. Catalyst: formed by the 97g and 3G of potassium sulfate anhydrous copper sulfate. Standard solution of sulphuric acid: about 0.02mol/L, or 0.1 mol/l standard solution. Indicator: by two 50% (v/v) alcohol solution of the neutral methyl red, cold saturated solution and a 50% (v/v) 教学内容 教师的组织和引导 学生活动 问 题 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 探讨，图片分析 请同学们结合初中知识，仔 细观察课本P7插图: 1、 请分辨一共有几种细胞,通过学生思考回忆，对 你能说出它们的名称吗,图片进行分析。然后请学生 它们之间都有些什么区回答。 别,共同的结构又有哪 些, 2、 你能从中举一两个例子，说第一个学生回答后，若 说造成细胞不同形态结构不完整，可继续请学生补 的原因吗, 充。 通过对以上问题的分析总结: 细胞在形态和功能上存在着多 样性，而又在结构上表现出一定学生回答后，教师可进 的统一性。 一步总结。 过渡 我们在这里几分钟就可以清楚 明白的了解到细胞具有多样性 和统一性，可是科学家们却是通 过了几百年才把细胞的这一特 点弄清楚，想在我们就来看一看 科学家们是如何对它进行研究 的。 细胞学说 首先，我们来看一下科学家 们的探索过程都经历了那些阶 段,各个阶段的代表人物和结学生可通过看书，在文中找 论是什么, 的相应的信息，并作答。 在细胞的发现过程过我们为什 么说施莱登和施旺是主要建立同学们分析后不难回答，因 者, 为是他们提出了细胞的地 位。 整个细胞学说主要体现的是细 胞的多样性还是统一性, 这里我们知道细胞之间的统一 过渡 性主要表现在基本结构相同即: 都有细胞膜、细胞质、细胞核。 那有没有那类细胞他没有这些 基本结构,又或者说他的基本 结构中的有些地方和我们前面 the second determination as a result. Results of two small The number. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results: when the ash is less than 1%, should not exceed 0.02% of the average results when the ash is more than 1%, should not exceed 2% of the average result. Protein from starch-determination of Kjeldahl nitrogen-1, define the content: formed by hydrolysis of starch and its derivatives in the sample of free amino acid content of nitrogen and ammonia-containing compounds. To the sample n samples of the original weight weight weight expressed as a percentage. Principle 2, in the presence of a catalyst, sulfuric acid starch and its derivatives and reaction products of alkali, and distilling ammonia release. Using boric acid solution collects, and then calibrated sulfuric acid solution titrated, get the volume of sulphuric acid consumed the number that can be converted into nitrogen. This method is suitable for ammonia content is greater than 0.01% (m/m) samples of starch and its derivatives; 3, reagent in the determination process, only use analytical grade reagent and distilled water, or at least the purity of water. Concentrated sulphuric acid: 96% (m/m), ρ 20 for 1.84g/mL. Sodium hydroxide solution: 40% (m/m), ρ 20 for 1.43g/mL. Boric acid solution: 20g/L. Catalyst: formed by the 97g and 3G of potassium sulfate anhydrous copper sulfate. Standard solution of sulphuric acid: about 0.02mol/L, or 0.1 mol/l standard solution. Indicator: by two 50% (v/v) alcohol solution of the neutral methyl red, cold saturated solution and a 50% (v/v) 所学的动植物的这些结构不 同, 真核细胞与原核细胞 前面我们了解了细胞都有相 似的基本结构:如细胞膜，细胞 质和细胞核，这反映了细胞的统 一性。但是有一类细胞没有成形 的细胞核，科学家根据细胞内有 无核膜为界限的细胞核，把细胞 共同结构 分为真核细胞和原核细胞。 在讲解的基础上，教师可进 一步提出以下问题引导学 生观察和思考: (1)细胞核和拟核在结构上有 什么不同, (2)原核细胞中有什么结构, 学生回答后，教师可进一步 (3)你认为原核细胞的结构简列表总结。 单，还是真核细胞的结构简单, 2、主要差异 通过前面的显微观察及阅 读课本，我们不难发现，不 论是原核生物还是真核生 物，它们都是多种多样的。 总结 通过今天的学习，我们了解到细胞不仅具有多样性还有统一性， 这些为细胞的地位的实现提供了基础。我们一起来总结一下，细胞的地位是什么, 所有的生物都是由细胞构成的，细胞是生物体的基本结构和功能单位。(病毒除外) the second determination as a result. Results of two small The number. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results: when the ash is less than 1%, should not exceed 0.02% of the average results when the ash is more than 1%, should not exceed 2% of the average result. Protein from starch-determination of Kjeldahl nitrogen-1, define the content: formed by hydrolysis of starch and its derivatives in the sample of free amino acid content of nitrogen and ammonia-containing compounds. To the sample n samples of the original weight weight weight expressed as a percentage. Principle 2, in the presence of a catalyst, sulfuric acid starch and its derivatives and reaction products of alkali, and distilling ammonia release. Using boric acid solution collects, and then calibrated sulfuric acid solution titrated, get the volume of sulphuric acid consumed the number that can be converted into nitrogen. This method is suitable for ammonia content is greater than 0.01% (m/m) samples of starch and its derivatives; 3, reagent in the determination process, only use analytical grade reagent and distilled water, or at least the purity of water. Concentrated sulphuric acid: 96% (m/m), ρ 20 for 1.84g/mL. Sodium hydroxide solution: 40% (m/m), ρ 20 for 1.43g/mL. Boric acid solution: 20g/L. Catalyst: formed by the 97g and 3G of potassium sulfate anhydrous copper sulfate. Standard solution of sulphuric acid: about 0.02mol/L, or 0.1 mol/l standard solution. Indicator: by two 50% (v/v) alcohol solution of the neutral methyl red, cold saturated solution and a 50% (v/v) 七、板书设计 一、细胞的多样性和统一性: 形态、结构不同——多样性 共同的基本结构——统一性 二、细胞学说的建立 方法 结果和代表人物 人体解剖和观察 器官。组织(维萨里、比夏) 显微镜(列文虎克) 细胞(虎克) 理论思维和科学实验 细胞是构成动植物的基本单位(施莱登、施旺)地位 修正中前进 细胞通过分裂产生新细胞(魏尔肖) 三、原核细胞与真核细胞 原核细胞 真核细胞 不 大小 较小 较大 同 本质区别 没有核膜包围的成型的细胞核 有 点 遗传物质 裸露的DNA分子 染色体上的DNA分子 细胞器 只有核糖体 有各种细胞器 细胞壁 主要成分是肽聚糖 植物:纤维素和果胶 相似点 都有细胞膜、细胞质，都以DNA作为遗传物质。 四、作业 the second determination as a result. Results of two small The number. 5, allows the analysis of personnel simultaneously or in quick succession for the second determination, the absolute value of the difference of the results: when the ash is less than 1%, should not exceed 0.02% of the average results when the ash is more than 1%, should not exceed 2% of the average result. Protein from starch-determination of Kjeldahl nitrogen-1, define the content: formed by hydrolysis of starch and its derivatives in the sample of free amino acid content of nitrogen and ammonia-containing compounds. To the sample n samples of the original weight weight weight expressed as a percentage. Principle 2, in the presence of a catalyst, sulfuric acid starch and its derivatives and reaction products of alkali, and distilling ammonia release. Using boric acid solution collects, and then calibrated sulfuric acid solution titrated, get the volume of sulphuric acid consumed the number that can be converted into nitrogen. This method is suitable for ammonia content is greater than 0.01% (m/m) samples of starch and its derivatives; 3, reagent in the determination process, only use analytical grade reagent and distilled water, or at least the purity of water. Concentrated sulphuric acid: 96% (m/m), ρ 20 for 1.84g/mL. Sodium hydroxide solution: 40% (m/m), ρ 20 for 1.43g/mL. Boric acid solution: 20g/L. Catalyst: formed by the 97g and 3G of potassium sulfate anhydrous copper sulfate. Standard solution of sulphuric acid: about 0.02mol/L, or 0.1 mol/l standard solution. Indicator: by two 50% (v/v) alcohol solution of the neutral methyl red, cold saturated solution and a 50% (v/v)