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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
54
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
第三段的段意为“细菌细胞内的物质被包在细胞膜内,细胞膜外还有—•层坚硬的细胞壁,青霉素和其他抗生素可以阻止这一细胞壁的形成,从而摧毁病原菌。
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本试题收录于:
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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