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Exam 9: Physical and Chemical Control of Microbes

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Question 21

True/False

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Most microbial contaminants of food are killed at freezing temperatures.

A) True
B) False

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Question 22

Multiple Choice

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The easiest microbial forms to kill or inhibit are

A) prions.
B) vegetative bacteria and fungi.
C) endospores.
D) protozoan cysts.
E) mycobacteria and staphylococci.

F) B) and E)
G) A) and C)

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Question 23

Multiple Choice

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A cleansing method that mechanically removes microbes and other debris to reduce contamination is

_____ is a halogen used in gaseous and liquid form for large-scale disinfection of drinking water and sewage.

HEPA filters are used to remove microbes from

Which of the following factors will influence the action of microbial agents?

Chlorine compounds remain stable and effective in the presence of excess organic matter.

Each of the following is the target of antimicrobial agents except

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. As an RN in a long-term care facility, you observe precautions to control and prevent the spread of infection. -As an RN,you utilize an alcohol-based hand cleaner with friction rub when your hands are not visibly dirty.Which of the following terms appropriately describes the type of antimicrobial control provided by alcohol-based hand cleaners?

Filtration can result in sterilization of serum and blood products

The process that destroys or removes all microorganisms and microbial forms including bacterial endospores on inanimate objects is

Analine dyes,like crystal violet,have antimicrobial activity particularly against gram-positive bacteria and some fungi.

Physical agents for controlling microbial growth include all the following except

Pasteurization does not kill endospores or thermoduric microbes.

Prions require more extensive methods of sterilization than are needed for bacterial endospores.

Please read the clinical scenario, and then answer the questions that follow to become familiar with the traditional NCLEX question format. A woman who is 38-weeks' pregnant is admitted for a scheduled cesarean section. As the RN, you perform an assessment of the patient and prepare her for the surgery. Prior to the procedure, you prepare to place an indwelling urinary catheter. -You prepare the patient for the sterile procedure.Which of the following statements,by the patient,best demonstrates understanding of the need for sterile equipment and aseptic procedures?

Pasteurization will make milk sterile.

Pseudomonas is resistant to soaps.

What instrument is most effective for pressure-temperature sterilization?

Alcohols