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Learn about the different levels of protein structure and how they contribute to the protein's overall shape and function.
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DNA, or deoxyribonucleic acid, is the molecular basis for inheritance, discovered in the mid-1800s and understood in 1953 with the double helix structure. Composed of a sugar-phosphate backbone and base pairs (adenine-thymine, guanine-cytosine), DNA stores genetic information, replicates, and expresses traits.
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蛋白质结构次序 (文章) | 蛋白质 | 可汗学院. 如果你看到这则信息,这表示下载可汗学院的外部资源时遇到困难. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. 生物. 课程: 生物 > 单元 5. 课程 5: 蛋白质. 蛋白和氨基酸简介.
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Many districts are facing a teacher shortage or have new teachers working to hone their skills. Below are five practical strategies school leaders can use to support teachers as they shift their practices to embrace the science of reading. 1. Emphasize the research.