精美通用PPT模板蓝色地球信息主题.ppt
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1、单击此处编辑主标题单击此处编辑主标题单击此处编辑副标题单击此处编辑副标题单击此处编辑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正文标题正文标题第一级第二级 第三级第四级第五级正文标题正文标题第一级第二级 第三级第四级第五级样例文本样例文本AGemmi 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样例文本AGemmi Cong 精美PPT模板尽在如下豆单欢迎大家欣
2、赏和下载样例文本样例文本BDNA is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms(with the exception of RNA viruses).The DNA segments that carry this genetic information are called genes,but other DNA sequences have structural purposes,or
3、 are involved in regulating the use of this genetic information.Along with RNA and proteins,DNA is one of the three major macromolecules that are essential for all known forms of life.DNA consists of two long polymers of simple units called nucleotides,with backbones made of sugars and phosphate gro
4、ups joined by ester bonds.These two strands run in opposite directions to each other and are therefore anti-parallel.Attached to each sugar is one of four types of molecules called nucleobases(informally,bases).It is the sequence of these four nucleobases along the backbone that encodes information.
5、This information is read using the genetic code,which specifies the sequence of the amino acids within proteins.The code is read by copying stretches of DNA into the related nucleic acid RNA in a process called transcription.样例文本样例文本BDNA is a nucleic acid that contains the genetic instructions used
6、in the development and functioning of all known living organisms(with the exception of RNA viruses).The DNA segments that carry this genetic information are called genes,but other DNA sequences have structural purposes,or are involved in regulating the use of this genetic information.Along with RNA
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