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病毒是地球上最微小的生物。高中生物学教材中有关病毒的知识分布于很多章节,如:免疫、细胞工程、基因工程、噬菌体侵染细菌实验、细胞癌变等。病毒性肝炎,艾滋病以及最近几年爆发的SARS、甲型H1N1流感、禽流感和猪流感等人类健康问题已成为高考考查的热点。本文主要从病毒的类型、成分、大小、结构、新陈代谢、繁殖、遗传变异、传播与防治、应用等方面进行总结。病毒是一类没有细胞结构专营活细胞内寄生生活但有遗传、
The virus is the smallest creature on earth. Knowledge of high school biology textbooks on the distribution of the virus in many chapters, such as: immunology, cell engineering, genetic engineering, bacteriophage infection in bacterial experiments, cancer and so on. Viral hepatitis, AIDS and human health problems such as SARS, Influenza A (H1N1), bird flu and swine flu have been the hot spots in college entrance examination in recent years. This article mainly summarizes the types, composition, size, structure, metabolism, breeding, genetic variation, transmission and prevention, application and so on of the virus. Viruses are a class of living cell-free parasites that have no cellular structure but are hereditary,