超星 - 自测题07 - 查题吧

单选题

This essentially mean that all tools and media used are free from the presence of any living material (sterile) and experiments are carried out in such a way as to prevent the accidental introduction of unknown microbes (contamination).

A. 不育的
B. 无菌的
C. 贫瘠的
D. 不毛的

单选题

Sterilization is a process which ensures the complete eradication of all living cells and viruses whereas disinfection is a vaguer term normally used to indicate the removal of potentially harmful microorganisms but not necessarily all other microbes.

A. 消毒
B. 杀菌
C. 使不孕
D. 无用状态

单选题

Physical (heat and radiation) and chemical methods are used to sterilize or disinfect materials and the method used is dependent on the nature of the materials to be sterilised.

A. 消毒
B. 杀菌
C. 使绝育
D. 监测

单选题

Heat, either moist or dry, is one of the most commonly used techniques but this cannot be used for any heat labile materials such as proteins and some plastics.

A. 耐热的
B. 不耐热的
C. 湿热的
D. 干热的

单选题

Due to the heat stability of bacterial spores, which cannot be removed by boiling, sterilization using moist heat must be done at highest temperature and pressure in an autoclave.

A. 消毒
B. 杀菌
C. 使不孕
D. 无用状态

单选题

These machines normally operate at 121℃ and 15 pounds per square inch which is sufficient to kill most microbes with the exception of spongiform encephalopathic agents, which are resistant to these conditions.

A. 抵抗者
B. 抵抗的
C. 反抗的
D. 顽固的

单选题

The length of time used for sterilisation depends on the volume of the materials.

A. 消毒
B. 使不孕
C. 杀菌
D. 无用状态

单选题

Dry heat is routinely used in the laboratory to sterilize wire loops and remove microhes from the rims of culture vessels by flaming in a bunsen flame.

A. 文化馆
B. 文化船舶
C. 培养皿
D. 栽培试管

单选题

Heat-labile materials can be sterilised by filtration or by radiation.

A. 消毒
B. 杀菌
C. 使绝育
D. 使不起作用

单选题

Chemicals such as sodium hypochlorite, 70% alcohols and other commercial disinfectants are normally used to decontaminate surfaces.

A. 净化
B. 污染
C. 对……消毒
D. 对……去污

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