bios 225 chapter 11 - –Answer decontim- ination 2. All of the follo...

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bios 225 chapter 11

• Microbial control methods are referred to as BLANK procedures

–Answer decontim- ination

• All of the following describe the typical microbial population targeted by antimicrobial

drugs except which of the following?Multiple choice question. Complex mixtures of microbes Microbes with variable resistance Uniform populations of like microbes Microbes with variable pathogenic capabilities –Answer uniform popluation of microbes

• A sterile object is free of which of the following?

Multiple choice question.All viable microorganisms and viruses Everything except endospores All viable microorganisms except viruses Almost all viable microorganisms and viruses –Answer All viable microorganisms and viruses

• Which of the following is the practical definition of microbial death? Multiple

choice question.Altered virulence of cells Reason –Answer

Cells may have their virulence altered but still be living cells. Inability to reproduce Loss of motility Altered appearance of cells 1 / 3

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–Answer inability to reproduce

• Which two types of macromolecules make up the majority of the cell mem- brane in

organisms?Multiple select question.Carbohydrates Protein s Nuclei acids Lipids –Answer proteins, lipids

• Which is the most prominent among antimicrobial physical agents? Multiple

choice question.Heat Radiati on Filtrati on Antibiotics –Answer heat

• Which of the following describes the main function of the cell membrane? Multiple choice

question.

Digestion of foreign matter Enzyme synthesis Synthesis of DNA Selective barrier Movement of the organism –Answer selective barrier

• Regarding the use of the terms microbicidal and microbistatic, higher tem- peratures are 2 / 3

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usually BLANK whereas lower temperatures are usuallyBLANK-

–Answer microbicidal microbistatic

• Which of the following are examples of physical agents or mechanical means used to

control microbes?Multiple select question. Radiation Germicide Phenolics Filtration Heat –Answer heat,filtration,radiation

• Which of the following devices would not be used for dry heat conditions? Multiple choice

question.Aut ocla ve Ove n Electric heating coil Flame –Answer autoclave

• Which of the following is a microorganism that can survive at low temper- atures?

Multiple choice question. Anaerobe Thermophile Mesophile Psychrotroph –Answer physcotroph

• BLANK used for microbial control includes electromagnetic waves with shorter

wavelengths.–Answer radiation

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