Question 1

The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is:

Accepted Answer

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

Question 2

The use of a physical or chemical process to destroy vegetative pathogens is:

Accepted Answer

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

Question 3

Iodophors include:

Accepted Answer

A)  chloramines.
B)  Betadine.
C)  tincture of iodine.
D)  alcohols.
E)  chlorhexidine.F) C) and D)
G) All of the above

Question 4

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)  cresolF) A) and C)
G) B) and D)

Question 5

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

The answer of Some microbial control agents are able to...

Question 6

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is:

Accepted Answer

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

Question 7

Which control method would not be a suitable choice for killing Mycobacteria in a capped culture tube?

Accepted Answer

A)  ultraviolet (germicidal)  light
B)  gamma rays
C)  121° C at 15 psi for 15 minutes
D)  160° C for 2 hours
E)  All of the choices are correct.F) D) and E)
G) None of the above

Question 8

Commercial products containing which chemicals are more effective at killing microorganisms?

Accepted Answer

A)  bacteriostatic
B)  bacteriocidal
C)  carbohydrate
D)  lead
E)  None of these are correct.F) D) and E)
G) All of the above

Question 9

Endospores can be killed by:

Accepted Answer

A)  dry heat at 170° C for 2 hours.
B)  incineration.
C)  glutaldehyde for 3 or more hours.
D)  ethylene oxide for 3 or more hours.
E)  All of the choices are correct.F) B) and D)
G) C) and D)

Question 10

Which of the following microbial forms have the highest resistance to physical and chemical controls?

Accepted Answer

A)  naked viruses
B)  protozoan cysts
C)  fungal spores
D)  bacterial endospores
E)  yeastF) B) and E)
G) D) and E)

Question 11

Vials of microorganisms that undergo the freeze-drying process called _____ will remain preserved and viable for years.

Accepted Answer

The answer of Vials of microorganisms that undergo the freeze-drying...

Question 12

Microbiological contaminants are best described as:

Accepted Answer

A)  unwanted microbes present on or in a substance.
B)  any and all microbes present on or in a substance.
C)  pathogenic microbes present on or in a substance.
D)  vegetative microbes present on or in a substance.
E)  None of the choices are correct.F) A) and E)
G) A) and D)

Question 13

A microorganism that is not motile and has stopped metabolizing could be considered dead.

Accepted Answer

A) True 
 B)False

Question 14

Most microbial contaminants of food are killed at freezing temperatures.

Accepted Answer

A) True 
 B)False

Question 15

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...

Question 16

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

Accepted Answer

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

Question 17

Which of these metals have antimicrobial properties associated with them?

Accepted Answer

A)  Silver
B)  Gold
C)  Tin
D)  Aluminum
E)  Both A and B are correct.F) C) and D)
G) A) and C)

Question 18

Ethylene oxide is:

Accepted Answer

A)  sporicidal.
B)  only effective with high heat.
C)  the active agent in household bleach.
D)  used as an antiseptic against anaerobes.
E)  a halogen.F) A) and D)
G) A) and B)

Question 19

Bacteriocidal agents are sterilants.

Accepted Answer

A) True 
 B)False

Question 20

The easiest microbial forms to kill or inhibit are:

Accepted Answer

A)  naked viruses.
B)  vegetative bacteria and fungi.
C)  endospores.
D)  protozoan cysts.
E)  Mycobacteria and Staphylococci.F) A) and B)
G) C) and D)

Exam 11: Physical and Chemical Agents for Microbial Control

Which of the following microbial forms have the highest resistance to physical and chemical controls?

Correct AnswerverifiedShow Answer

Endospores can be killed by:

Correct AnswerverifiedShow Answer

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is:

Correct AnswerverifiedShow Answer

Which control method would not be a suitable choice for killing Mycobacteria in a capped culture tube?

Correct AnswerverifiedShow Answer

Commercial products containing which chemicals are more effective at killing microorganisms?

Correct AnswerverifiedShow Answer

Which of these metals have antimicrobial properties associated with them?

Correct AnswerverifiedShow Answer

The use of a physical or chemical process to destroy vegetative pathogens is:

Correct AnswerverifiedShow Answer

A microorganism that is not motile and has stopped metabolizing could be considered dead.

Correct AnswerverifiedShow Answer

Iodophors include:

Correct AnswerverifiedShow Answer

Ethylene oxide is:

Correct AnswerverifiedShow Answer

Microbiological contaminants are best described as:

Correct AnswerverifiedShow Answer

The easiest microbial forms to kill or inhibit are:

Correct AnswerverifiedShow Answer

Most microbial contaminants of food are killed at freezing temperatures.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIFiltration is a microbial control method...View AnswerShow Answer

Bacteriocidal agents are sterilants.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Vials of microorganisms that undergo the freeze-drying process called _____ will remain preserved and viable for years.

Correct AnswerverifiedShow Answer

The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is:

Correct AnswerverifiedShow 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 AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Filtration is a microbial control method...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified