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RNA和DNA的区别,什么是原核生物什么是真核细胞?

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RNA和DNA的区别,什么是原核生物什么是真核细胞?
如有英文回答就更好,
RNA是由四种核糖核苷酸组成的,DNA是由四种脱氧核糖核苷酸组成的.
RNA是单链结构,DNA是双螺旋结构
原核生物与真核生物的区别是,有无以核膜为界限的细胞核
原核生物是没有核膜,也就是没有成形的细胞核的,真核细胞有核膜,也就是有成形的细胞核的例如动植物的细胞,还有真菌的细胞都是真核的
RNA is composed of four kinds of ribose nucleotide composition,DNA is composed of four kinds of deoxyribose nucleotide composition.RNA is a single structure,DNA double helix structureProkaryotes and eukaryotes difference is there to the nuclear envelope,to the limits of the nucleusProkaryotes are the absence of a nuclear membrane,there is no forming the nucleus of eukaryotic cells,with the nuclear envelope,is forming the nucleus such as animal and plant cells,and fungi are eukaryotic cells