Question 1

Why should a chlorine-disinfected cat cage be thoroughly rinsed before returning the cat?

Accepted Answer

A)  To remove chlorine-resistant bacteria
B)  To activate the disinfecting properties of chlorine
C)  To decrease the risk of skin irritation
D)  To allow the cage to dryE) B) and C)
F) All of the above

Question 2

Which is less inactivated by organic material?

Accepted Answer

A)  Detergents
B)  Quaternary ammonium
C)  Chlorine
D)  PhenolsE) B) and C)
F) A) and B)

Question 3

Why are pseudomonas species highly resistant to disinfection?

Accepted Answer

A)  They grow in large numbers
B)  They do not create a biofilm
C)  They cannot attach to living tissue
D)  They exude a glycocalyxE) None of the above
F) B) and C)

Question 4

Iodine is effective in disinfecting/sanitizing all of the following except

Accepted Answer

A)  spattered bloody feces from a dog with parvovirus.
B)  nasal secretion of a dog with kennel cough.
C)  a ringworm lesion on a cat.
D)  a sample containing Clostridium tetani spores.E) A) and B)
F) A) and C)

Question 5

Which common disinfectant should be chosen to clean a piece of medical-grade plastic tubing that has a slimy film on its inside surface?

Accepted Answer

A)  Isopropyl alcohol
B)  10% bleach
C)  Tween buffer
D)  GlutaraldehydeE) A) and C)
F) B) and C) D

Question 6

What is not important to consider when choosing disinfectants?

Accepted Answer

A)  Cost
B)  Color
C)  Stability
D)  Spectrum of actionE) C) and D)
F) None of the above

Question 7

Non enveloped viruses common in veterinary hospitals include all but

Accepted Answer

A)  canine parvovirus.
B)  feline panleukopenia.
C)  feline calicivirus.
D)  rabies virus.E) B) and C)
F) All of the above

Question 8

Instead of free-iodine compounds, iodophors ______________________________.

Accepted Answer

A)  are less irritating but have a shorter duration of action
B)  cannot be used on open wounds
C)  are no longer used in Vet medicine
D)  are less irritating and have a longer duration of actionE) A) and C)
F) B) and D)

Question 9

What can make disinfectants less effective?

Accepted Answer

A)  Hard water
B)  Improper dilution
C)  Inappropriate selection based on organism
D)  All of theseE) B) and C)
F) A) and B)

Question 10

All of the following should be considered when choosing an ideal disinfectant except

Accepted Answer

A)  amount of tissue irritation or surface damage the chemical causes.
B)  ability of the chemical to become inactivated.
C)  how many microbes the chemical works against.
D)  how pleasant the chemical smells.
E)  the cost of the chemical.F) A) and D)
G) B) and D) D

Question 11

A surfactant is a chemical that

Accepted Answer

A)  breaks the surface tension of water.
B)  allows easier interaction between organic material and chemicals.
C)  when combined with an iodophor are often referred to as surgical scrubs.
D)  All of the above are trueE) A) and B)
F) B) and C)

Question 12

Common sites for nosocomial infections include all except

Accepted Answer

A)  orthopedic implants.
B)  urinary tracts.
C)  endotracheal tubes.
D)  pastures.E) B) and C)
F) All of the above D

Question 13

What is alcohol's main mechanism of action against pathogens?

Accepted Answer

A)  Destroy its DNA
B)  Slows bacterial cell wall growth
C)  Dissolves lipids
D)  Gets them drunkE) A) and B)
F) C) and D)

Question 14

Which of the following statements is true about alcohol as a disinfectant?

Accepted Answer

A)  Alcohol is effective in destroying Bacillus spores
B)  Alcohol is effective against nonenveloped viruses but worthless against enveloped viruses
C)  Alcohol is not effective as a broad-spectrum antibacterial
D)  Alcohol's mode of action involves dissolving pathogen membranes and inactivating proteinsE) A) and B)
F) B) and D)

Question 15

When using chemicals to kill microbes on surfaces, _________________ are for use on inanimate objects and _______________ are considered safe to use on living tissues.

Accepted Answer

A)  antiseptics, disinfectants
B)  disinfectants, antiseptics
C)  disinfectants, sterilizers
D)  antibiotics, disinfectantsE) A) and B)
F) All of the above

Question 16

As a technician is cleaning the runs to the clinic's dog room, she runs out of 10% bleach. In an effort to complete her cleaning, she grabs a bottle of color-safe bleach from the laundry room and decides to dilute it to 10% with tap water to make a working solution of bleach. What is a concern with this procedure?

Accepted Answer

A)  Water should not be used as a diluent, as it inactivates the chloride compound
B)  Color safe bleach is just a diluted form of regular bleach, so her dilution makes it too weak
C)  Color safe bleach is different than regular bleach, and has less disinfection capabilities
D)  She shouldn't be using bleach at all, as dogs are very sensitive to chlorineE) A) and D)
F) A) and C)

Question 17

A farmer is struggling with infectious interdigital dermatitis in his dairy herd. After consulting with his veterinarian, he has decided to invest in a foot bath system. Since he knows a bit about the antimicrobial capabilities of isopropyl alcohol, he would like to use this (in diluted form)  as his foot bath chemical. Why would you advise against this?

Accepted Answer

A)  Alcohols are volatile and flammable
B)  Isopropyl alcohol is not effective against all microbes
C)  Isopropyl alcohol would be inactivated by the organic materials in the foot bath
D)  All of the above are reasons not to use this compoundE) None of the above
F) A) and D)

Question 18

What occurs when populations of microorganisms are exposed to low concentrations of antimicrobial chemicals?

Accepted Answer

A)  Their growth is stopped
B)  Selective pressure is applied to create death
C)  Selective pressure is applied that creates resistance
D)  Their DNA is denaturedE) B) and D)
F) A) and B)

Question 19

Phenols are most effective against

Accepted Answer

A)  gram-positive bacteria.
B)  gram-negative bacteria.
C)  spores.
D)  fungi.E) None of the above
F) A) and B)

Question 20

What is the definition of "Disinfection?"

Accepted Answer

A)  Removal of all microbial organisms from a surface
B)  Removing visible debris off a surface
C)  General destruction of pathogens
D)  Treatment of an animal ill with an infectious diseaseE) A) and C)
F) None of the above

Exam 11: Disinfectants and Antiseptics

Why should a chlorine-disinfected cat cage be thoroughly rinsed before returning the cat?

Correct Answer
verified

Which is less inactivated by organic material?

Correct Answer
verified

Why are pseudomonas species highly resistant to disinfection?

Correct Answer
verified

Iodine is effective in disinfecting/sanitizing all of the following except

Correct Answer
verified

Which common disinfectant should be chosen to clean a piece of medical-grade plastic tubing that has a slimy film on its inside surface?

Correct Answer
verified
D

What is not important to consider when choosing disinfectants?

Correct Answer
verified

Non enveloped viruses common in veterinary hospitals include all but

Correct Answer
verified

Instead of free-iodine compounds, iodophors ______________________________.

Correct Answer
verified

What can make disinfectants less effective?

Correct Answer
verified

All of the following should be considered when choosing an ideal disinfectant except

Correct Answer
verified
D

A surfactant is a chemical that

Correct Answer
verified

Common sites for nosocomial infections include all except

Correct Answer
verified
D

What is alcohol's main mechanism of action against pathogens?

Correct Answer
verified

Which of the following statements is true about alcohol as a disinfectant?

Correct Answer
verified

When using chemicals to kill microbes on surfaces, ___ are for use on inanimate objects and _ are considered safe to use on living tissues.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What occurs when populations of microorganisms are exposed to low concentrations of antimicrobial chemicals?

Correct Answer
verified

Phenols are most effective against

Correct Answer
verified

What is the definition of "Disinfection?"

Correct Answer
verified

Exam 11: Disinfectants and Antiseptics

Why should a chlorine-disinfected cat cage be thoroughly rinsed before returning the cat?

Correct AnswerverifiedShow Answer

Which is less inactivated by organic material?

Correct AnswerverifiedShow Answer

Why are pseudomonas species highly resistant to disinfection?

Correct AnswerverifiedShow Answer

Iodine is effective in disinfecting/sanitizing all of the following except

Correct AnswerverifiedShow Answer

Which common disinfectant should be chosen to clean a piece of medical-grade plastic tubing that has a slimy film on its inside surface?

Correct AnswerverifiedD

What is not important to consider when choosing disinfectants?

Correct AnswerverifiedShow Answer

Non enveloped viruses common in veterinary hospitals include all but

Correct AnswerverifiedShow Answer

Instead of free-iodine compounds, iodophors ______________________________.

Correct AnswerverifiedShow Answer

What can make disinfectants less effective?

Correct AnswerverifiedShow Answer

All of the following should be considered when choosing an ideal disinfectant except

Correct AnswerverifiedD

A surfactant is a chemical that

Correct AnswerverifiedShow Answer

Common sites for nosocomial infections include all except

Correct AnswerverifiedD

What is alcohol's main mechanism of action against pathogens?

Correct AnswerverifiedShow Answer

Which of the following statements is true about alcohol as a disinfectant?

Correct AnswerverifiedShow Answer

When using chemicals to kill microbes on surfaces, _________________ are for use on inanimate objects and _______________ are considered safe to use on living tissues.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What occurs when populations of microorganisms are exposed to low concentrations of antimicrobial chemicals?

Correct AnswerverifiedShow Answer

Phenols are most effective against

Correct AnswerverifiedShow Answer

What is the definition of "Disinfection?"

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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D

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Correct Answer
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D

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D

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Correct Answer
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When using chemicals to kill microbes on surfaces, ___ are for use on inanimate objects and _ are considered safe to use on living tissues.

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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