生物科技PPT模板.ppt

南京九校一年三班之走进细胞世界,主讲人：,讲授内容,Clicktoaddtitleinhere,Clicktoaddtitleinhere,Clicktoaddtitleinhere,Clicktoaddtitleinhere,4,1,2,3,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,一.细胞发展史,秦汉时期,1590年,1665年,17世纪前,尔雅记载了590多种动物和植物，并纳入一定的分类系统。,人们试图回答植物和动物的组成，但受观察工具的限制。,一位荷兰人用两块透镜制造出了第一台显微镜。,英国科学家胡克用自制的显微镜发现了细胞。,细胞学说,19世纪40年代：德国科学家施莱登和施旺提出了“细胞学说”。,施旺,施莱登,细胞学说,动物和植物都是由细胞构成的；细胞是生物体结构很功能的基本单位；细胞是由细胞分裂产生的。,二.认识细胞,1.细胞的形状有圆的、立方形的、柱形的、菱形的、多边形的等多种形状。,细胞的形态,酵母菌,植物纤维细胞,植物表皮细胞,精子,二.认识细胞,2.细胞的大小细胞一般很小，只有一到几十微米之间。,细胞的大小,各类细胞大小的比较,例外，如卵细胞就特别大，鸵鸟卵细胞直径为5cm，鸡卵细胞为23cm，人卵细胞为200m；有些神经细胞的突起可长达1m，但细胞体的直径不会超过100m；小型白细胞的直径只有34m，人的红细胞的直径为7m。,3.细胞的结构动物细胞,二.认识细胞,细胞膜,细胞核,细胞质,作用：保护细胞并控制细胞与外界之间物质交换,作用：内含遗传物质，起传宗接代作用,作用：许多生命活动的场所,细胞壁保护和支持细胞作用,叶绿体内含叶绿素，是光合作用的场所,液泡内有细胞液,细胞膜,细胞质,细胞核,3.细胞的结构植物细胞,二.认识细胞,动植物细胞结构有何不同？,叶绿体,植物,动物,液泡,细胞壁,细胞核,细胞质,细胞膜,无,无,无,有,有,有,有,有,有,有,有,有,讨论：,任务：“小小侦探家”,公安部得到一份生物作品，从外形上分辨不出该样品是取自植物还是动物，你能否用学过的知识将它鉴定出来？,1、樟树的茎能够直立与植物细胞中的什么结构有关？,2、植物的叶为什么通常是绿色的？,思考,细胞中的细胞壁由纤维素组成，具有保护和支持细胞的作用，使植物细胞有一定的形状。,植物的叶片细胞中具有叶绿体，内含叶绿素。,三.细胞生长,生物体生长发育的过程中生长、繁殖、衰老、死亡。,分裂,成年人全身细胞总数约1012个。细胞种类有200多种。这么多种类细胞均来自一个受精卵。,有丝分裂,分化,成年人全身细胞总数约1012个。细胞种类有200多种。这么多种类细胞均来自一个受精卵。,有丝分裂,分化,神经细胞,红细胞,肌肉细胞,上皮组织细胞,功能：光合作用,功能：保护功能,功能：贮藏营养物质,总结：同一植物体的这些细胞也都来自一群彼此相似的早期胚细胞。,Clicktoedittitlestyle,Textinhere,Textinhere,Contents,Contents,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,DescriptionofthecontentsDescriptionofthecontents,Descriptionofthebusiness,Descriptionofthebusiness,Descriptionofthebusiness,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Descriptionofthecontents,Descriptionofthecontents,Clicktoedittitlestyle,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Addyourtext,Addyourtext,Addyourtext,Addyourtext,Addyourtext,Addyourtext,Clicktoedittitlestyle,2005,2006,2007,2008,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Clicktoedittitlestyle,Descriptionofthecontents,Textinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Textinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Textinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Textinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Clicktoedittitlestyle,Contents01,Contents02,Contents03,Contents04,Contents05,Contents06,0%20%40%60%80%100%,18.5%,17.5%,8.7%,23.6%,63.6%,84.3%,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Clicktoedittitlestyle,Textinhere,Textinhere,Textinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,ClicktoaddText,Clicktoedittitlestyle,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Titleinhere,2.Descriptionofthecompanyssubcontents,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,1.Descriptionofthecompanyssubcontents,Clicktoedittitlestyle,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Titleinhere,Titleinhere,Titleinhere,Titleinhere,A,B,C,D,Clicktoedittitlestyle,Descriptionofthecontents,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Titleinhere,Titleinhere,Titleinhere,Clicktoedittitlestyle,Textinhere,Textinhere,Textinhere,Textinhere,Textinhere,Textinhere,Textinhere,Textinhere,Contents,Contents,Contents,Contents,Contents,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Clicktoedittitlestyle,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,DescriptionofthecontentsDescriptionofthecontents,DescriptionofthecontentsDescriptionofthecontents,DescriptionofthecontentsDescriptionofthecontents,ContentTitle,ContentTitle,ContentTitle,Clicktoedittitlestyle,Pleasewritedownofasloganforavisionofacompanyinshortly.,Pleasewritedownofasloganforavisionofacompanyinshortly.,Pleasewritedownofasloganforavisionofacompanyinshortly.,Pleasewritedownofasloganforavisionofacompanyinshortly.,Vision01,Vision03,Vision02,Vision04,CompanyLOGO,Clicktoedittitlestyle,Clicktoedittitlestyle,Titleinhere,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Descriptionofthecontents,Descriptionofthecontents,Descriptionofthecontents,Descriptionofthecontents,Titleinhere,Titleinhere,Titleinhere,Service01,Service02,Service03,LOGO,ThemeGalleryisaDesignDigitalContent&ContentsmalldevelopedbyGuildDesignInc.,Clicktoedittitlestyle,Clicktoedittitlestyle,Titleinhere,AddTitle,AddTitle,AddTitle,AddTitle,DescriptionofthecontentsDescriptionofthecontents,DescriptionofthecontentsDescriptionofthecontents,Textinhere,Textinhere,Textinhere,Textinhere,DescriptionofthecontentsDescriptionofthecontents,DescriptionofthecontentsDescriptionofthecontents,Clicktoedittitlestyle,T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