所屬欄目:發(fā)酵生物技術(shù)英語
Nucleotides are vital to the operation and the reproduction of cells. Each nucleotide contains three different kinds of components: a five-carbon sugar (ribose or deoxyribose),a nitrogen-containig base (either a single-ringed pyrimidine or a doubleringed ......(本文共 1748 字 ) [閱讀本文] >>