The function of DNA is to ___. A. provide energy B. store genetic information C. synthesize proteins D. break down food 相关知识点: 试题来源: 解析 B。DNA 的功能是储存遗传信息。DNA 携带了生物体的遗传密码,决定了生物体的性状和特征。提供能量是 ATP 的功能,合成蛋白质是核糖体等细胞器的功能...
缺少甲基化转移酶活性或者DNA复制后缺少甲基供体会导致未能持续维持甲基化,也就是所谓的被动DNA去甲基化。DNA甲基化也可以通过酶的方式来擦除,也就是主动DNA去甲基化。与DNA甲基化反应受到单个DNA甲基化转移酶所催化相反,主动DNA去甲基化需要一系列的酶来实现,而起始这个过程的酶就叫做DNA去甲基化酶。在植物中,一类...
What is the structure of the DNA molecule, and what do we mean by antiparallel? What is DNA's primary function? 1. What are the DNA and its role in heredity 2. What are the structure of the DNA, the genetic code, the replication of the genetic material?
In this section, we will discuss the basic structure and function of DNA. DNA Nucleotides The building blocks of nucleic acids are nucleotides. Nucleotides that compose DNA are called deoxyribonucleotides. The three components of a deoxyribonucleotide are a five-carbon sugar called deoxyribose, a ...
Genomics studies the function of genes, the DNA instructions by which the body makes proteins. FORBES: A hail of silver bullets The change is publicly accessible by a track-changes function on the ClinicalTrials.gov website. FORBES: Schering-Plough Backdates Trial At least in part it seems...
DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits. The structure of DNA was described in 1953, leading to further understanding of DNA
DNA methylation is a conserved epigenetic modification that is important for gene regulation and genome stability. Aberrant patterns of DNA methylation can lead to plant developmental abnormalities. A specific DNA methylation state is an outcome of dynam
We compared the effects of trivalent polyamines, spermidine (SPD) and norspermidine (NSPD), a chemical homologue of SPD, on the structure of DNA and gene expression. The chemical structures of SPD and NSPD are different only with the number of methylene groups between amine groups, [N-3-N-...
• 细胞凋亡:程序性细胞死亡是正常组织发育和更新的核心特征,可由外在信号(包括细胞毒性T 细胞或炎性细胞因子)或内在途径(包括DNA 损伤或细胞内应激)触发。 线粒体整合细胞内促凋亡和抗凋亡效应信号,产生细胞凋亡的最终“进行”或“不进行”信号。净促凋亡信号导致线粒体外膜透化 (MOMP)——与线粒体通透性转变...
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