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在这一章中,包括四个方面的内容。第一为核酸化学,第二为核酸代谢,第三为核酸与蛋白质生物合成和第四为核酸与医学的关系。一、本章的学习重点核酸含磷较为恒定,一般含磷为9～10％。核酸水解产物是碱基(嘌呤碱和嘧啶碱)、戊糖(或者D-2-脱氧核糖或者D-核糖)和磷酸。核酸的概念及核酸分为DNA和RNA(mRNA、tRNA和rRNA)。组成核酸的基本单位是单核苷酸。在核酸代谢中人体内嘌呤碱的分解终产物是尿酸。核酸在蛋白质生物合成中起重要作用,包括DNA的半保留复制,DNA
In this chapter, there are four aspects. The first is nucleic acid chemistry, the second is nucleic acid metabolism, the third is the relationship between nucleic acid and protein biosynthesis and the fourth is nucleic acid and medicine. 1. The focus of this chapter’s learning is that the nucleic acid containing phosphorus is relatively constant and generally contains 9 to 10% of phosphorus. Nucleic acid hydrolysates are bases (purine base and pyrimidine base), pentoses (or D-2-deoxyribose or D-ribose), and phosphoric acid. The concept of nucleic acids and nucleic acids are divided into DNA and RNA (mRNA, tRNA and rRNA). The basic unit that makes up a nucleic acid is a single nucleotide. The final product of purine base decomposition in the human body in nucleic acid metabolism is uric acid. Nucleic acid plays an important role in protein biosynthesis, including semi-reserved replication of DNA, DNA