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A. Autibiotics destroy pathosenic microbes by preventing the formation of the walls surrounding the membranes of the microbial c
A. Autibiotics destroy pathosenic microbes by preventing the formation of the walls surrounding the membranes of the microbial c
admin
2009-07-11
68
问题
A. Autibiotics destroy pathosenic microbes by preventing the formation of the walls surrounding the membranes of the microbial cells that prevent the cells from split- ting open.
B. More than 70 clinically useful antibiotics have been in- vented to fight pathogenic microbes and cancer cells by interacting with their normal cell processes.
C. Human cells are not surrounded by a membrane
D. Some antibiotics disrupt the cell membrane of certain microbes, letting vital nutrients to escape form the cell or poisonous substances to enter and kill the cell.
E. Nystatin is used to disrupt the wall surrounding the membrane.
F. Some antibiotics fight disease by interfering with chemical activities in microbial cells but not in human cells.
*
选项
答案
A
解析
见第四段最后一句,但人体细胞膜不会受抗生素的影响,因为抗生素可以瓦解细胞膜中所含的成分是微生物细胞独有的物质。
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职称英语卫生类B级题库职称英语分类
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职称英语
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