资源描述:
《2013届高考生物一轮复习学案23dna 是主要遗传物质》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、2013届高考生物一轮复习学案23 DNA是主要的遗传物质(人教版)考纲要求 人类对遗传物质的探索过程(Ⅱ)。一、肺炎双球菌的转化实验1.体内转化实验(1)实验过程(2)结论:加热杀死的S型细菌中,含有某种促使R型细菌转化为S型细菌的________。2.体外转化实验:(1)方法:将S型细菌的________、蛋白质和多糖等物质分开,分别加入到培养R型细菌的培养基中。(2)过程(3)结果:只有加入S型细菌的________,R型细菌才能转化为S型细菌。(4)结论:______才是使R型细菌产生稳定遗传变化的物质。二、噬菌体侵染细菌实验1.实验材料——T2噬
2、菌体methodofbasicoperation;includingCT,andMRIvariouscontrast,andImage-guidedbiopsy,ultrasound,etc.(11)teaching,scientificresearchandtraininginclinicalteaching,writtenwithinthreeyearswithsomelevelofrevieworbookreportsofnotlessthan1.Four,toreadreferencebooks,Journalofinternalmedicine(
3、medicalcollegeplanningmaterials)andofthemedicalimaging(medicalcollegeplanningmaterials);thepracticalscience;theHarrisonScience(inEnglish),ChineseJournalofinternalmedicineseries.SurgicalsurgicalspecialistreferstotherulescompletethemedicalundergraduateorgraduateeducationFoundation,a
4、cceptedandadoptedsurgicalspecialisttraining,surgicaldiagnosis,treatment,preventionandfollow-upofcommondiseases,surgicaldiagnosisandtreatmentofrareorincurablediseases,acuteandcriticalillnessinemergencyandrescuehavepreliminaryknowledgeandexperience.Surgicalspecialisttrainingfor3year
5、s.Asurgicalspecialist,traininggoalsthroughtraining,traineestoachievesurgicalspecialistlevel,withmoreskilledsurgicalskills,canguidetheteachingof3.结论:________是遗传物质。思考 为什么用35S标记噬菌体的蛋白质外壳,用32P标记噬菌体的DNA? 三、证明RNA是遗传物质的实验1.烟草花叶病毒组成:________和蛋白质。2. 烟草花叶病毒—+3.结论:____是遗传物质。四、DNA是主要的遗传物质:因为绝
6、大多数生物的遗传物质是________,所以说________是主要的遗传物质。探究点一 肺炎双球菌的转化实验1.肺炎双球菌比较填空:种类项目S型细菌R型细菌菌落________________菌体有__________无__________毒性有毒性,使小鼠患______死亡______2.格里菲思转化实验(体内转化)填空:(1)实验过程及结果(2)结论:加热杀死的S型细菌中,含有某种促成R型细菌转化为S型细菌的“________”。3.艾弗里转化实验(体外转化)填空(1)原理:对S型细菌的成分提取、分离、鉴定,并与____________混合培养,以观
7、察各成分的作用。(2)过程methodofbasicoperation;includingCT,andMRIvariouscontrast,andImage-guidedbiopsy,ultrasound,etc.(11)teaching,scientificresearchandtraininginclinicalteaching,writtenwithinthreeyearswithsomelevelofrevieworbookreportsofnotlessthan1.Four,toreadreferencebooks,Journalofintern
8、almedicine(medicalcollegeplanning