By October 1, 1999, the PRC had undergone a glorious yet tortuous course of 50 years, amidgreat changes in Chinese society.
Before the founding of New China in 1949, China's highest yearly outputs of major industrial and agricultural products were 445,000 tons of yarn, 22.79 billion meters of cloth, 61,880,000 tons of coal, 320,000 tons of crude oil, 6 billion kwh of electric energy production, 150 million tons of grain, and 849,000 tons of cotton.
Since the founding of New China, especially in the 20 years after the start of reform and opening to the outside world in 1978 China has made great achievements in economic construction and social development.
In 1998, the GDP was 7,955.3 billion yuan, an increase of 6.4 times over 1978, at constant prices; the outputs of some major industrial and agricultural products, such as grain, cotton, meat, edible oil, coal, steel, cement, cloth and TV sets, leapt from a backward position to first place in the world.
Deoxyribonucleic acid, or DNA is a nucleic acid molecule that contains the genetic instructions used in the development and functioning of all living organisms. The main role of DNA is the long-term storage of information and it is often compared to a set of blueprints, since DNA contains the instructions needed to construct other components of cells, such as proteins and RNAmolecules. 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.
Chemically, DNA is a long polymer of simple units called nucleotides, with a backbone made of sugars and phosphate atoms joined by ester bonds. Attached to each sugar is one of four types of molecules called bases. It is the sequence of these four bases along the backbone that encodes information. 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. Most of these RNA molecules are used to synthesize proteins, but others are used directly in structures such as ribosomes and spliceosomes.
Within cells, DNA is organized into structures called chromosomes and the set of chromosomes within a cell make up a genome. These chromosomes are duplicated before cells divide, in a process called DNA replication. Eukaryotic organisms such as animals, plants, and fungi store their DNA inside the cell nucleus, while in prokaryotes such as bacteria it is found in the cell's cytoplasm. Within the chromosomes, chromatin proteins such as histones compact and organize DNA, which helps control its interactions with other proteins and thereby control
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Een blog zoals er nog nooit een geweest is
