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1、单击此处编辑主标题,单击此处编辑副标题,单击此处编辑标题,正文部分样例A正文部分样例B正文部分样例C正文部分样例D正文部分样例I正文部分样例II正文部分样例III,单击此处编辑标题,正文部分样例A正文部分样例B正文部分样例C正文部分样例D正文部分样例I正文部分样例II正文部分样例III,正文标题,第一级第二级 第三级第四级第五级,正文标题,第一级第二级 第三级第四级第五级,样例文本A,Gemmi Cong 精美PPT模板尽在如下豆单欢迎大家欣赏和下载,样例文本A,Gemmi Cong 精美PPT模板尽在如下豆单欢迎大家欣赏和下载,样例文本B,The DNA double helix is st
2、abilized primarily by two forces:hydrogen bonds between nucleotides and base-stacking interactions among the aromatic nucleobases.12 In the aqueous environment of the cell,the conjugated bonds of nucleotide bases align perpendicular to the axis of the DNA molecule,minimizing their interaction with t
3、he solvation shell and therefore,the Gibbs free energy.The four bases found in DNA are adenine(abbreviated A),cytosine(C),guanine(G)and thymine(T).These four bases are attached to the sugar/phosphate to form the complete nucleotide,as shown for adenosine monophosphate.The nucleobases are classified
4、into two types:the purines,A and G,being fused five-and six-membered heterocyclic compounds,and the pyrimidines,the six-membered rings C and T.8 A fifth pyrimidine nucleobase,uracil(U),usually takes the place of thymine in RNA and differs from thymine by lacking a methyl group on its ring.Uracil is
5、not usually found in DNA,occurring only as a breakdown product of cytosine.In addition to RNA and DNA a large number of artificial nucleic acid analogues have also been created to study the proprieties of nucleic acids,or for use in biotechnology.13,样例文本B,The DNA double helix is stabilized primarily
6、 by two forces:hydrogen bonds between nucleotides and base-stacking interactions among the aromatic nucleobases.12 In the aqueous environment of the cell,the conjugated bonds of nucleotide bases align perpendicular to the axis of the DNA molecule,minimizing their interaction with the solvation shell
7、 and therefore,the Gibbs free energy.The four bases found in DNA are adenine(abbreviated A),cytosine(C),guanine(G)and thymine(T).These four bases are attached to the sugar/phosphate to form the complete nucleotide,as shown for adenosine monophosphate.The nucleobases are classified into two types:the
8、 purines,A and G,being fused five-and six-membered heterocyclic compounds,and the pyrimidines,the six-membered rings C and T.8 A fifth pyrimidine nucleobase,uracil(U),usually takes the place of thymine in RNA and differs from thymine by lacking a methyl group on its ring.Uracil is not usually found
9、in DNA,occurring only as a breakdown product of cytosine.In addition to RNA and DNA a large number of artificial nucleic acid analogues have also been created to study the proprieties of nucleic acids,or for use in biotechnology.13,样例文本C,一股脱氧核糖核酸上所具有的各类型含氮碱基，都只会与另一股上的一个特定类型碱基产生键结。此种情形称为互补性碱基配对。嘌呤与嘧啶
10、之间会形成氢键，在一般情况下，A只与T相连，而C只与G相连。因此排列于双螺旋上的核苷酸，便以这种称为碱基对的方式相互联结。除此之外，与脱氧核糖核酸序列无关的疏水性效应，以及重叠效应所产生的力，也是两股脱氧核糖核酸能维持结合状态的原因16。由于氢键比共价键更容易断裂，这使双股脱氧核糖核酸可能会因为机械力或高温作用，而有如拉链一般地解开17，这种现象被称为DNA变性。由于互补的特性，使位于双股序列上的讯息，皆以双倍的形式存在，这种特性对于脱氧核糖核酸复制过程来说相当重要。互补碱基之间可逆且具专一性的交互作用，是生物脱氧核糖核酸所共同拥有的关键功能2。,样例文本C,一股脱氧核糖核酸上所具有的各类型含
11、氮碱基，都只会与另一股上的一个特定类型碱基产生键结。此种情形称为互补性碱基配对。嘌呤与嘧啶之间会形成氢键，在一般情况下，A只与T相连，而C只与G相连。因此排列于双螺旋上的核苷酸，便以这种称为碱基对的方式相互联结。除此之外，与脱氧核糖核酸序列无关的疏水性效应，以及重叠效应所产生的力，也是两股脱氧核糖核酸能维持结合状态的原因16。由于氢键比共价键更容易断裂，这使双股脱氧核糖核酸可能会因为机械力或高温作用，而有如拉链一般地解开17，这种现象被称为DNA变性。由于互补的特性，使位于双股序列上的讯息，皆以双倍的形式存在，这种特性对于脱氧核糖核酸复制过程来说相当重要。互补碱基之间可逆且具专一性的交互作用，
12、是生物脱氧核糖核酸所共同拥有的关键功能2。,内 容 概 览,内 容 概 览,内 容 概 览,第一节,第二节,第三节,第四节,第五节,内容,公 司 发 展,交 互 图,饼 图,50%,24%,10%,16%,50%,24%,16%,10%,AAA,DDD,BBB,CCC,项 目 AB,项目A,项目B,项目内容XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX,项目内容XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX,状 态 图,内容 C,内容 B,内容 A,关 系 图,A结点,D结点,C结点,B结点,A,B,C,D,关系,概 念 图,项 目 图,A,XXXXXXXXXXXXXXXXXXXXXXXXXXX,B,YYYYYYYYYYYYYYYYYYYYYYYY,C,ZZZZZZZZZZZZZZZZZZZZZZZZZZ,B,C,A,影 响 分 析 图,文字内容,影响3,影响2,影响1,图 表,DDD,FFF,EEE,BBB,CCC,AAA,中间,标 题,图 表,AAA,BBB,内容,内容,图 表,ccc,AAA,标题,bbb,aaa,BBB,CCC,项 目 图,项 目 图,总 结,1,2,3,4,5,标题,Thank you！,
