生物科技模板

1、家長(zhǎng)開放日家長(zhǎng)開放日編輯ppt南京九校一年三班之南京九校一年三班之走進(jìn)細(xì)胞世界走進(jìn)細(xì)胞世界編輯ppt講授內(nèi)容講授內(nèi)容Click to add title in here Click to add title in here Click to add title in here Click to add title in here 4123ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.編輯ppt一一. 細(xì)胞發(fā)展史細(xì)胞發(fā)展史秦漢時(shí)期秦漢時(shí)期1590年年1665年年

2、17世紀(jì)前世紀(jì)前爾雅爾雅記載了記載了590多種動(dòng)多種動(dòng)物和植物，并納入一定的分物和植物，并納入一定的分類系統(tǒng)。類系統(tǒng)。人們?cè)噲D回答植物和動(dòng)物的組人們?cè)噲D回答植物和動(dòng)物的組成，但受觀察工具的限制。成，但受觀察工具的限制。一位荷蘭人用兩塊透鏡制造出一位荷蘭人用兩塊透鏡制造出了第一臺(tái)顯微鏡。了第一臺(tái)顯微鏡。英國(guó)科學(xué)家胡克用自制的顯微英國(guó)科學(xué)家胡克用自制的顯微鏡發(fā)現(xiàn)了細(xì)胞。鏡發(fā)現(xiàn)了細(xì)胞。編輯ppt細(xì)胞學(xué)說細(xì)胞學(xué)說 19世紀(jì)世紀(jì)40年代：德國(guó)科學(xué)家年代：德國(guó)科學(xué)家施萊登施萊登和和施旺施旺提出了提出了“細(xì)胞學(xué)說細(xì)胞學(xué)說”。施旺施旺施萊登施萊登編輯ppt細(xì)胞學(xué)說細(xì)胞學(xué)說 動(dòng)物和植物都是由細(xì)胞構(gòu)成的；動(dòng)物和植

3、物都是由細(xì)胞構(gòu)成的； 細(xì)胞是生物體結(jié)構(gòu)很功能的基本單位；細(xì)胞是生物體結(jié)構(gòu)很功能的基本單位； 細(xì)胞是由細(xì)胞分裂產(chǎn)生的。細(xì)胞是由細(xì)胞分裂產(chǎn)生的。編輯ppt二二. 認(rèn)識(shí)細(xì)胞認(rèn)識(shí)細(xì)胞 1. 細(xì)胞的形狀細(xì)胞的形狀 有圓的、立方形的、柱形的、菱形的、多邊形的有圓的、立方形的、柱形的、菱形的、多邊形的等多種形狀。等多種形狀。編輯ppt酵母菌酵母菌植物纖維細(xì)胞植物纖維細(xì)胞植物表皮細(xì)胞植物表皮細(xì)胞精子精子編輯ppt二二. 認(rèn)識(shí)細(xì)胞認(rèn)識(shí)細(xì)胞2. 細(xì)胞的大小細(xì)胞的大小細(xì)胞一般很小，只有一到幾十微米之間。細(xì)胞一般很小，只有一到幾十微米之間。編輯ppt各類細(xì)胞大小的比較各類細(xì)胞大小的比較細(xì)胞類型細(xì)胞類型直徑大?。ㄖ睆酱?/p>

4、?。╱m）支原體支原體0.1-0.3細(xì)菌細(xì)菌1-2動(dòng)物植物動(dòng)物植物10-100（多數(shù)（多數(shù)20-30）原生動(dòng)物原生動(dòng)物100例外，如卵細(xì)胞就特別大，鴕鳥卵細(xì)胞直徑為例外，如卵細(xì)胞就特別大，鴕鳥卵細(xì)胞直徑為5 cm，雞卵細(xì)胞為，雞卵細(xì)胞為23 cm，人卵細(xì)胞，人卵細(xì)胞為為200 m；有些神經(jīng)細(xì)胞的突起可長(zhǎng)達(dá)；有些神經(jīng)細(xì)胞的突起可長(zhǎng)達(dá)1 m，但細(xì)胞體的直徑不會(huì)超過，但細(xì)胞體的直徑不會(huì)超過100 m；小型；小型白細(xì)胞的直徑只有白細(xì)胞的直徑只有34 m，人的紅細(xì)胞的直徑為，人的紅細(xì)胞的直徑為7 m。編輯ppt3. 細(xì)胞的結(jié)構(gòu)細(xì)胞的結(jié)構(gòu)動(dòng)物細(xì)胞動(dòng)物細(xì)胞二二. 認(rèn)識(shí)細(xì)胞認(rèn)識(shí)細(xì)胞細(xì)胞膜細(xì)胞膜細(xì)胞核細(xì)胞核細(xì)胞

5、質(zhì)細(xì)胞質(zhì)作用：保護(hù)細(xì)胞并控制細(xì)胞作用：保護(hù)細(xì)胞并控制細(xì)胞 與外界之間物質(zhì)交換與外界之間物質(zhì)交換作用：內(nèi)含遺傳物質(zhì)，起作用：內(nèi)含遺傳物質(zhì)，起 傳宗接代作用傳宗接代作用作用：許多生命活動(dòng)的場(chǎng)所作用：許多生命活動(dòng)的場(chǎng)所編輯ppt細(xì)胞壁細(xì)胞壁保護(hù)和支持細(xì)胞作用保護(hù)和支持細(xì)胞作用葉綠體葉綠體內(nèi)含葉綠素，是光合作用的場(chǎng)所內(nèi)含葉綠素，是光合作用的場(chǎng)所液泡液泡內(nèi)有細(xì)胞液內(nèi)有細(xì)胞液細(xì)胞膜細(xì)胞膜細(xì)胞質(zhì)細(xì)胞質(zhì)細(xì)胞核細(xì)胞核3. 細(xì)胞的結(jié)構(gòu)細(xì)胞的結(jié)構(gòu)植物細(xì)胞植物細(xì)胞二二. 認(rèn)識(shí)細(xì)胞認(rèn)識(shí)細(xì)胞編輯ppt動(dòng)植物細(xì)胞結(jié)構(gòu)有何不同？動(dòng)植物細(xì)胞結(jié)構(gòu)有何不同？葉綠體葉綠體植物植物動(dòng)物動(dòng)物液泡液泡細(xì)胞壁細(xì)胞壁細(xì)胞核細(xì)胞核細(xì)胞質(zhì)細(xì)胞質(zhì)細(xì)

6、胞膜細(xì)胞膜無無無無無無有有有有有有有有有有有有有有有有有有編輯ppt任務(wù)：任務(wù)：“小小偵探家小小偵探家”公安部得到一份生物作品，從外形上分辨不出該樣品是取自公安部得到一份生物作品，從外形上分辨不出該樣品是取自植物還是動(dòng)物，你能否用學(xué)過的知識(shí)將它鑒定出來？植物還是動(dòng)物，你能否用學(xué)過的知識(shí)將它鑒定出來？ 動(dòng)物細(xì)胞動(dòng)物細(xì)胞植物細(xì)胞植物細(xì)胞細(xì)胞壁細(xì)胞壁 無無 有有細(xì)胞膜細(xì)胞膜 有有 有有 細(xì)胞質(zhì)細(xì)胞質(zhì) 有有 有有細(xì)胞核細(xì)胞核 有有 有有大的液泡大的液泡 無無 有有葉綠體葉綠體 無無 有有編輯ppt1、樟樹的莖能夠直立與植物細(xì)胞中的什么結(jié)、樟樹的莖能夠直立與植物細(xì)胞中的什么結(jié)構(gòu)有關(guān)？構(gòu)有關(guān)？2、植物的葉

7、為什么通常是綠色的？、植物的葉為什么通常是綠色的？思考思考細(xì)胞中的細(xì)胞壁由纖維素組成，具有保護(hù)和支細(xì)胞中的細(xì)胞壁由纖維素組成，具有保護(hù)和支持細(xì)胞的作用，使植物細(xì)胞有一定的形狀。持細(xì)胞的作用，使植物細(xì)胞有一定的形狀。植物的葉片細(xì)胞中具有葉綠體，內(nèi)含葉綠素。植物的葉片細(xì)胞中具有葉綠體，內(nèi)含葉綠素。編輯ppt三三. 細(xì)胞生長(zhǎng)細(xì)胞生長(zhǎng)生物體生長(zhǎng)發(fā)育的過程中生物體生長(zhǎng)發(fā)育的過程中生長(zhǎng)生長(zhǎng)、繁殖繁殖、衰老衰老、死亡死亡。編輯ppt分裂分裂編輯ppt 成年人全身細(xì)胞總數(shù)約成年人全身細(xì)胞總數(shù)約 1012個(gè)。個(gè)。 細(xì)胞種類有細(xì)胞種類有200 多種。這么多種類細(xì)胞均多種。這么多種類細(xì)胞均來自一個(gè)來自一個(gè)受精卵。受

8、精卵。有絲分裂有絲分裂分化分化編輯ppt 成年人全身細(xì)胞總數(shù)約成年人全身細(xì)胞總數(shù)約 1012個(gè)。個(gè)。 細(xì)胞種類有細(xì)胞種類有200 多種。這么多種類細(xì)胞均多種。這么多種類細(xì)胞均來自一個(gè)來自一個(gè)受精卵。受精卵。有絲分裂有絲分裂分化分化編輯ppt神經(jīng)細(xì)胞神經(jīng)細(xì)胞紅細(xì)胞紅細(xì)胞肌肉細(xì)胞肌肉細(xì)胞上皮組織細(xì)胞上皮組織細(xì)胞編輯ppt功能：光合作用功能：光合作用功能：保護(hù)功能功能：保護(hù)功能功能：貯藏營(yíng)養(yǎng)物質(zhì)功能：貯藏營(yíng)養(yǎng)物質(zhì)總結(jié)總結(jié)：同一植物體的這些細(xì)胞也都來自一群彼此：同一植物體的這些細(xì)胞也都來自一群彼此 相似的早期胚細(xì)胞。相似的早期胚細(xì)胞。編輯pptClick to edit title styleText

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