Question 1

Which of the following types of agents targets protein conformation?

Accepted Answer

A)   detergents
B)   ultraviolet light
C)   alcohol
D)   hydrogen peroxide
E)   crystal violet

Question 2

Which common hospital pathogen is able to grow abundantly in soap dishes?

Accepted Answer

A)   Escherichia coli
B)   Pseudomonas
C)   Hemophilus influenzae
D)   Mycobacteria tuberculosis
E)   Salmonella

Question 3

Iodophors include

Accepted Answer

A)   chloramines.
B)   povidone iodine.
C)   tincture of iodine.
D)   alcohols.
E)   chlorhexidine.

Question 4

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Accepted Answer

A)   disinfection.
B)   sterilization.
C)   antisepsis.
D)   sanitization.
E)   degermation.

Question 5

The chemical agents)  that produces highly reactive hydroxyl-free radicals and also decomposes to O2 gas is/ are

Accepted Answer

A)   Cidex.
B)   cationic detergents.
C)   hydrogen peroxide.
D)   chlorhexidine.
E)   iodophors.

Question 6

Which is correct regarding the rate of microbial death?

Accepted Answer

A)   Cells die at increasingly greater rates.
B)   Only older cells die in a culture.
C)   Cells in a culture die at a constant rate.
D)   Upon contact with the control agent, all cells die at one time.
E)   Cells become metabolically inactive but are never killed. C

Question 7

Discuss the technique of filtration as a microbial control method, why it's utilized, and specific materials that are filtered.

Accepted Answer

Filtration is a microbial control method that involves passing a liquid or gas through a filter to remove microorganisms. This technique is utilized to ensure the removal of bacteria, viruses, and other microorganisms from liquids and gases, particularly in industries such as pharmaceuticals, food and beverage, and water treatment.

Filtration is an effective method for microbial control because it physically separates microorganisms from the liquid or gas, rather than relying on chemical agents or heat. This makes it a preferred method for preserving the integrity and quality of sensitive materials, such as pharmaceutical products and beverages, where exposure to chemicals or high temperatures could be detrimental.

Specific materials that are commonly filtered include water, air, pharmaceutical products, beverages, and food products. For example, in the pharmaceutical industry, filtration is used to remove bacteria and other contaminants from drug solutions and injectable products. In the food and beverage industry, filtration is utilized to remove microorganisms from juices, beer, and dairy products. In water treatment, filtration is essential for removing bacteria and other pathogens from drinking water.

The materials used for filtration can vary depending on the specific application, but commonly used filter materials include cellulose, activated carbon, ceramic, and membrane filters. These filters are designed to effectively trap and remove microorganisms while allowing the desired liquid or gas to pass through. Overall, filtration is a crucial microbial control method that plays a vital role in ensuring the safety and quality of various products and processes.

Question 8

Alcohols

Accepted Answer

A)   denature proteins when in a 50-95% solution.
B)   are used to disinfect items by soaking.
C)   are skin degerming agents.
D)   at 50% or higher concentrations dissolve cell membrane lipids.
E)   All of these choices are correct.

Question 9

Compare and contrast antisepsis, disinfection, sanitization, and sterilization with regard to techniques used and level of microbial control achieved.

Accepted Answer

Antisepsis, disinfection, sanitization, ...

Question 10

Some microbial control agents are able to _____ cell proteins by breaking bonds that maintain the native state, three-dimensional configuration of the proteins.

Accepted Answer

denature; ...

Question 11

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Accepted Answer

A)   disinfection.
B)   sterilization.
C)   sanitization.
D)   degermation.

Question 12

Which of the following is officially accepted as a sterilant and high-level disinfectant?

Accepted Answer

A)   benzalkonium chloride
B)   silver nitrate
C)   glutaraldehyde
D)   triclosan
E)   cresol

Question 13

Physical methods of microbial control will typically sterilize, whereas chemical methods will only disinfect.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following chemicals is a disinfectant for soft contact lenses?

Accepted Answer

A)   hydrogen peroxide
B)   alcohol
C)   hexachlorophene
D)   glutaraldehyde
E)   hypochorites

Question 15

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

Accepted Answer

The answer of _____ is a halogen used in gaseous...

Question 16

Triclosan, a common ingredient in antimicrobial hand soaps available to consumers, has recently been banned by the FDA Food and Drug Administration) . All of the following are concerns regarding the use of triclosan, except

Accepted Answer

A)   Scientific evidence does not demonstrate that triclosan-supplemented soaps are any more effective than plain soap and water for hand hygiene.
B)   There are concerns that triclosan may be a hormone disruptor.
C)   Wide spread use of triclosan may favor the survival and growth and of highly resistant bacteria.
D)   Wide spread regular use of triclosan could interfere with the maintenance of healthy normal microbiota.
E)   These are all concerns that have been expressed about triclosan use. There are no exceptions here.

Question 17

The compound that is an organic base containing chlorine and two phenolic rings and is used increasingly for hand scrubbing, neonatal washes, wound degerming, and prepping surgical skin sites is

Accepted Answer

A)   carbolic acid.
B)   chlorhexidine.
C)   triclosan.
D)   formalin.
E)   quarternary ammonium compounds. B

Question 18

_____ heat is more rapidly effective and efficient compared to _____ heat.

Accepted Answer

The answer of _____ heat is more rapidly effective and...

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

The thermal death point of a strain of Stapylcococcus aureus was determined to be 63°C. How would the the thermal death point of Bacillus subtilis compare?

Accepted Answer

A)   The thermal death point of Bacillus subtilis would be just slightly higher than that of Staphylococcus aureus.
B)   The thermal death point of Bacillus subtilis would be significantly higher than that of Staphylococcus aureus.
C)   The thermal death point of Bacillus subtilis would be the same as that of Staphylococcus aureus.
D)   The thermal death point of Bacillus subtilis would be lower that of Staphylococcus aureus.

Exam 11: Physical and Chemical Agents for Microbial Control

Which of the following types of agents targets protein conformation?

Correct Answer
verified

Which common hospital pathogen is able to grow abundantly in soap dishes?

Correct Answer
verified

Iodophors include

Correct Answer
verified

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Correct Answer
verified

The chemical agents) that produces highly reactive hydroxyl-free radicals and also decomposes to O₂ gas is/ are

Correct Answer
verified

Which is correct regarding the rate of microbial death?

Correct Answer
verified
C

Discuss the technique of filtration as a microbial control method, why it's utilized, and specific materials that are filtered.

Alcohols

Correct Answer
verified

Compare and contrast antisepsis, disinfection, sanitization, and sterilization with regard to techniques used and level of microbial control achieved.

Correct Answer
Answered by ExamLex AI
Antisepsis, disinfection, sanitization, ...
View Answer

Some microbial control agents are able to _____ cell proteins by breaking bonds that maintain the native state, three-dimensional configuration of the proteins.

Correct Answer
verified
denature; ...
View Answer

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Correct Answer
verified

Which of the following is officially accepted as a sterilant and high-level disinfectant?

Correct Answer
verified

Physical methods of microbial control will typically sterilize, whereas chemical methods will only disinfect.

Correct Answer
verified

Which of the following chemicals is a disinfectant for soft contact lenses?

Correct Answer
verified

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

Correct Answer
verified

Triclosan, a common ingredient in antimicrobial hand soaps available to consumers, has recently been banned by the FDA Food and Drug Administration) . All of the following are concerns regarding the use of triclosan, except

Correct Answer
verified

The compound that is an organic base containing chlorine and two phenolic rings and is used increasingly for hand scrubbing, neonatal washes, wound degerming, and prepping surgical skin sites is

Correct Answer
verified
B

_ heat is more rapidly effective and efficient compared to _ heat.

Correct Answer
verified

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

Correct Answer
verified

The thermal death point of a strain of Stapylcococcus aureus was determined to be 63°C. How would the the thermal death point of Bacillus subtilis compare?

Correct Answer
verified

Exam 11: Physical and Chemical Agents for Microbial Control

Which of the following types of agents targets protein conformation?

Correct AnswerverifiedShow Answer

Which common hospital pathogen is able to grow abundantly in soap dishes?

Correct AnswerverifiedShow Answer

Iodophors include

Correct AnswerverifiedShow Answer

The use of a physical or chemical process to destroy vegetative pathogens on inanimate objects is

Correct AnswerverifiedShow Answer

The chemical agents) that produces highly reactive hydroxyl-free radicals and also decomposes to O2 gas is/ are

Correct AnswerverifiedShow Answer

Which is correct regarding the rate of microbial death?

Correct AnswerverifiedC

Discuss the technique of filtration as a microbial control method, why it's utilized, and specific materials that are filtered.

Alcohols

Correct AnswerverifiedShow Answer

Compare and contrast antisepsis, disinfection, sanitization, and sterilization with regard to techniques used and level of microbial control achieved.

Correct AnswerAnswered by ExamLex AIAntisepsis, disinfection, sanitization, ...View AnswerShow Answer

Some microbial control agents are able to _____ cell proteins by breaking bonds that maintain the native state, three-dimensional configuration of the proteins.

Correct Answerverifieddenature; ...View AnswerShow Answer

Scrubbing or immersing the skin in chemicals to reduce the numbers of microbes on the skin is

Correct AnswerverifiedShow Answer

Which of the following is officially accepted as a sterilant and high-level disinfectant?

Correct AnswerverifiedShow Answer

Physical methods of microbial control will typically sterilize, whereas chemical methods will only disinfect.

Correct AnswerverifiedShow Answer

Which of the following chemicals is a disinfectant for soft contact lenses?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Triclosan, a common ingredient in antimicrobial hand soaps available to consumers, has recently been banned by the FDA Food and Drug Administration) . All of the following are concerns regarding the use of triclosan, except

Correct AnswerverifiedShow Answer

The compound that is an organic base containing chlorine and two phenolic rings and is used increasingly for hand scrubbing, neonatal washes, wound degerming, and prepping surgical skin sites is

Correct AnswerverifiedB

_____ heat is more rapidly effective and efficient compared to _____ heat.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The thermal death point of a strain of Stapylcococcus aureus was determined to be 63°C. How would the the thermal death point of Bacillus subtilis compare?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The chemical agents) that produces highly reactive hydroxyl-free radicals and also decomposes to O₂ gas is/ are

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Antisepsis, disinfection, sanitization, ...
View Answer

Correct Answer
verified
denature; ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

_ heat is more rapidly effective and efficient compared to _ heat.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified