病毒既不属于原核生物,也不属于真核生物,因为它们没有一般的细胞结构,在病毒中没有合成蛋白质外壳所必需的核糖体,所以病毒只能寄生在动物、植物和细菌的细胞内繁殖,它能使宿主细胞的结构转而合成它自身新的病毒物质。在宿主细胞中病毒以复制进行繁殖,对病毒的复制过程的几个阶段进行了论述。 Viruses are neither prokaryotes nor eukaryotes because they have no general cell structure and do not have the ribosomes necessary for the synthesis of protein shells in the virus so viruses can only parasitize intracellular multiplication of animals, plants and bacteria , Which allows the host cell’s structure to turn to its own new viral substance. The virus propagates in replication in host cells, and several stages of the virus replication process are discussed.