Question 1

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.F) A) and E)
G) A) and C)

Question 2

The process that destroys or removes all microorganisms and microbial forms including bacterial endospores is:

Accepted Answer

A)  disinfection.
B)  sterilization.
C)  antisepsis.
D)  sanitization.
E)  degermation.F) All of the above
G) A) and D)

Question 3

Chlorine dioxide and ethylene oxide are gaseous sterilants.

Accepted Answer

A) True 
 B)False

Question 4

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) A) and D)
G) A) and E)

Question 5

Historically, which of the following was instilled into the eyes of newborn infants to prevent gonococcal infections?

Accepted Answer

A)  triclosan
B)  formaldehyde
C)  phenol
D)  silver nitrate
E)  mercurochromeF) B) and D)
G) A) and D)

Question 6

Which of the following does not contain a heavy metal?

Accepted Answer

A)  Tincture of iodine
B)  Merthiolate
C)  Silver nitrate solutions
D)  Zinc
E)  MercurochromeF) C) and D)
G) D) and E)

Question 7

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) A) and B)
G) B) and C)

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

Endospores can be killed by:

Accepted Answer

A)  dry heat at 170 ∘\circ∘  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) A) and E)
G) A) and B)

Question 10

_____ 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 11

Most microbial contaminants of food are killed at freezing temperatures.

Accepted Answer

A) True 
 B)False

Question 12

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Accepted Answer

A) True 
 B)False

Question 13

Physical agents for controlling microbial growth include all of the following, except:

Accepted Answer

A)  ultraviolet radiation.
B)  boiling water.
C)  HEPA filters.
D)  pasteurization.
E)  hydrogen peroxide.F) B) and C)
G) A) and B)

Exam 11: Physical and Chemical Agents for Microbial Control

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

Correct Answer
verified

The process that destroys or removes all microorganisms and microbial forms including bacterial endospores is:

Correct Answer
verified

Chlorine dioxide and ethylene oxide are gaseous sterilants.

Correct Answer
verified

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

Correct Answer
verified

Most microbial contaminants of food are killed at freezing temperatures.

Correct Answer
verified

Endospores can be killed by:

Correct Answer
verified

Which of these metals have antimicrobial properties associated with them?

Correct Answer
verified

Which of the following does not contain a heavy metal?

Correct Answer
verified

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

Correct Answer
verified

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Correct Answer
verified

Physical agents for controlling microbial growth include all of the following, except:

Correct Answer
verified

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

Correct Answer
verified

Historically, which of the following was instilled into the eyes of newborn infants to prevent gonococcal infections?

Correct Answer
verified

Exam 11: Physical and Chemical Agents for Microbial Control

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

Correct AnswerverifiedShow Answer

The process that destroys or removes all microorganisms and microbial forms including bacterial endospores is:

Correct AnswerverifiedShow Answer

Chlorine dioxide and ethylene oxide are gaseous sterilants.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Most microbial contaminants of food are killed at freezing temperatures.

Correct AnswerverifiedShow Answer

Endospores can be killed by:

Correct AnswerverifiedShow Answer

Which of these metals have antimicrobial properties associated with them?

Correct AnswerverifiedShow Answer

Which of the following does not contain a heavy metal?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Alcohols are more effective at inactivating enveloped viruses than naked viruses.

Correct AnswerverifiedShow Answer

Physical agents for controlling microbial growth include all of the following, except:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Historically, which of the following was instilled into the eyes of newborn infants to prevent gonococcal infections?

Correct AnswerverifiedShow Answer

Correct Answer
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