Question 1

Alcohols use what mechanism to inactivate microorganisms?

Accepted Answer

A)  Denature proteins.
B)  Destroy DNA.
C)  Denature RNA.
D)  Inhibit cell wall synthesis.

Question 2

What two alcohols are effective in killing the hepatitis B virus (HBV) ?

Accepted Answer

A)  50% isopropyl and 50% butanol
B)  95% propanol and 70% ethanol
C)  70% isopropyl and 95% ethanol
D)  70% pentanol and 70% isopropyl

Question 3

The best way to care for your back is to prevent back injuries.All of the following are some ways to prevent back injuries except:

Accepted Answer

A)  carefully lifting heavy objects overhead.
B)  using good posture.
C)  using the legs to lift, not the back.
D)  asking for assistance when a load is too heavy.

Question 4

After using the phone, the laboratory tech sprayed the receiver with a chemical spray.This process will kill a defined scope of microorganisms.What is this process called?

Accepted Answer

A)  Sterilization
B)  Bacteriostatic
C)  Disinfection
D)  Bactericidal

Question 5

Which topical antiseptic disrupts the microbial cell membrane and precipitates the cellular contents?

Accepted Answer

A)  Chlorhexidine gluconate
B)  Povidone-iodine
C)  95% Ethanol
D)  60% Isopropyl alcohol

Question 6

All of the following organisms can typically cause infection from aerosolization of specimens except:

Accepted Answer

A)  Mycobacterium tuberculosis.
B)  Brucella spp.
C)  Staphylococcus aureus.
D)  Francisella tularensis.

Question 7

A biosafety level 2 (BSL-2)  level of containment is used for organisms that:

Accepted Answer

A)  can cause a catastrophe if released.
B)  usually cause 90% mortality in the population.
C)  create a moderate potential hazard for employees and the environment.
D)  do not cause significant harm to employees and the environment.

Question 8

The Joint Commission requires the following safety training to be documented in an employee's record except:

Accepted Answer

A)  proper storage of gases.
B)  biosafety level training.
C)  bloodborne pathogen training.
D)  hazardous materials management.

Question 9

All the following factors play a significant role in the selection and implementation of the appropriate method of disinfection except:

Accepted Answer

A)  temperature.
B)  contact time.
C)  biofilms.
D)  humidity.

Question 10

Routine handwashing in health care settings mandates washing at all the following times except:

Accepted Answer

A)  in high-risk areas such as ICU and burn units.
B)  on entering protective isolation units.
C)  before and after routine patient contact.
D)  when gloves become soiled during a procedure or dressing change on the same patient.

Question 11

The main goal of handwashing is to:

Accepted Answer

A)  sterilize a person's hand.
B)  increase the risk of passing on pathogens.
C)  eliminate transient flora.
D)  disinfect a person's hands.

Question 12

The purpose of surgical hand scrubs and waterless hand rubs is to:

Accepted Answer

A)  eliminate the transient flora and most of the resident flora on the skin.
B)  remove all physical dirt and some residential flora.
C)  remove all resident flora.
D)  remove all transient flora.

Question 13

Universal/Standard Precautions require that:

Accepted Answer

A)  only some body fluids be considered infectious and capable of transmitting disease.
B)  body fluids with visible blood be treated as noninfectious.
C)  blood and body fluids from all patients be considered infectious and capable of transmitting disease.
D)  urine and feces be considered noninfectious.

Question 14

If this is present on a surface to be disinfected, it can shield microorganisms from the disinfectant or inactivate the disinfectant.What is this substance?

Accepted Answer

A)  Bleach (sodium hypochlorite) 
B)  Organic material
C)  Hydrochloric acid
D)  Water

Question 15

Processing of patient specimens and handling of actively growing cultures of microorganisms puts an employee at risk of potential contact with the infectious agent through all the following routes except:

Accepted Answer

A)  mucous membranes.
B)  blood splashed onto intact skin.
C)  inhalation of aerosols.
D)  accidental ingestion.

Question 16

Biosafety level 4 (BSL-4)  organisms are dangerous, exotic, and pose an increased risk of aerosol-transmitted infections and life-threatening disease.Two examples of BSL-4 organisms are:

Accepted Answer

A)  Marburg and Congo-Crimean hemorrhagic fever.
B)  St.Louis encephalitis virus and Coccidioides immitis.
C)  Mycobacterium tuberculosis and Ebola.
D)  Francisella tularensis and Ebola.

Question 17

Before performing a phlebotomy, the phlebotomist will clean the area on a patient's arm with a substance before inserting the needle.This substance is called a(n) :

Accepted Answer

A)  disinfectant.
B)  sterilizer.
C)  antiseptic.
D)  bactericidal.

Question 18

Pasteurization achieves:

Accepted Answer

A)  disinfection.
B)  sterilization.
C)  asepsis.
D)  filtration.

Question 19

A Material Safety Data Sheet (MSDS)  contains all the following information except:

Accepted Answer

A)  the nature of a chemical (flammable, toxic, carcinogenic) .
B)  general characteristics.
C)  precautions when using a chemical.
D)  classification of a chemical (acid, base, protein) .

Question 20

All of the following are examples of personal protective equipment (PPE)  except:

Accepted Answer

A)  gloves.
B)  laboratory coats.
C)  safety glasses.
D)  prescription glasses.

Exam 4: Control of Microorganisms

Pasteurization achieves:

Correct AnswerverifiedShow Answer

A biosafety level 2 (BSL-2) level of containment is used for organisms that:

Correct AnswerverifiedShow Answer

Universal/Standard Precautions require that:

Correct AnswerverifiedShow Answer

Biosafety level 4 (BSL-4) organisms are dangerous, exotic, and pose an increased risk of aerosol-transmitted infections and life-threatening disease.Two examples of BSL-4 organisms are:

Correct AnswerverifiedShow Answer

The purpose of surgical hand scrubs and waterless hand rubs is to:

Correct AnswerverifiedShow Answer

Routine handwashing in health care settings mandates washing at all the following times except:

Correct AnswerverifiedShow Answer

Which topical antiseptic disrupts the microbial cell membrane and precipitates the cellular contents?

Correct AnswerverifiedShow Answer

All of the following organisms can typically cause infection from aerosolization of specimens except:

Correct AnswerverifiedShow Answer

Before performing a phlebotomy, the phlebotomist will clean the area on a patient's arm with a substance before inserting the needle.This substance is called a(n) :

Correct AnswerverifiedShow Answer

A Material Safety Data Sheet (MSDS) contains all the following information except:

Correct AnswerverifiedShow Answer

If this is present on a surface to be disinfected, it can shield microorganisms from the disinfectant or inactivate the disinfectant.What is this substance?

Correct AnswerverifiedShow Answer

Alcohols use what mechanism to inactivate microorganisms?

Correct AnswerverifiedShow Answer

What two alcohols are effective in killing the hepatitis B virus (HBV) ?

Correct AnswerverifiedShow Answer

The Joint Commission requires the following safety training to be documented in an employee's record except:

Correct AnswerverifiedShow Answer

All of the following are examples of personal protective equipment (PPE) except:

Correct AnswerverifiedShow Answer

All the following factors play a significant role in the selection and implementation of the appropriate method of disinfection except:

Correct AnswerverifiedShow Answer

The main goal of handwashing is to:

Correct AnswerverifiedShow Answer

The best way to care for your back is to prevent back injuries.All of the following are some ways to prevent back injuries except:

Correct AnswerverifiedShow Answer

After using the phone, the laboratory tech sprayed the receiver with a chemical spray.This process will kill a defined scope of microorganisms.What is this process called?

Correct AnswerverifiedShow Answer

Processing of patient specimens and handling of actively growing cultures of microorganisms puts an employee at risk of potential contact with the infectious agent through all the following routes except:

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified