Question 1

Yam remembers correctly if he identifies which among the levels of disinfection is being described as being capable of sterilization if done for extended periods of time of up to 10 hours?
A)Low level disinfection
B)Intermediate level disinfection
C)High level disinfection
D)Sterilization

Accepted Answer

High level disinfection
High level disinfection involves the use of high level disinfectants that are able to produce sterile items if the procedure is conducted for an extended period of time of up to 10 hours. At short intervals of up to 30 minutes, high level disinfection is already achieved.

Question 2

Zack recalls that the level of disinfection that is able to kill proliferative microorganisms, all types of fungi, and is able to inactivate most species of viruses is which among the following levels?
A)Low level disinfection
B)Intermediate level disinfection
C)High level disinfection
D)Sterilization

Accepted Answer

Intermediate level disinfection
Intermediate level disinfection is the level of disinfection that is able to kill all proliferative microorganisms, all types of fungi, and is able to inactivate most species of viruses. Chemical disinfectants used in this process are classified as hospital disinfectants and are identified as tuberculocidal in nature. This is commonly used in the clinical laboratory setting.

Question 3

Ariel understands that the type of disinfection that is able to kill most species of bacteria, fungi, and viruses is which among the following categories?
A)Sterilization
B)High level disinfection
C)Low level disinfection
D)Intermediate level disinfection

Accepted Answer

Low level disinfection
Low level disinfection is the process wherein a disinfectant is used to kill most species of bacteria, fungi, and viruses but is unable to kill Mycobacterium tuberculosis. Other options do not fit the description of the question stated above.

Question 4

Brian remembers correctly if he identifies which among the following is not a purpose of decontamination in the clinical laboratory?
A)Make the instruments and devices safer to work with
B)Protects the personnel from infection
C)Prevents the contamination of the environment
D)Facilitates traffic inside the laboratory

Accepted Answer

Facilitates traffic inside the laboratory
Decontamination is routinely done inside the clinical laboratory in order to make the use of different instruments and devices safe to work with. It is also done to protect the personnel and the environment from infection and contamination. However, decontamination is never used for the purpose of regulating traffic inside the laboratory.

Question 5

Carlo is right when he identifies which principle is applied when using steam sterilization on items that were not pre-cleaned?
A)Duration is prolonged and the temperature is increased.
B)Duration is prolonged but the temperature remains the same.
C)Duration is maintained but the temperature used is increased.
D)Both the duration and the temperature are kept the same way as sterilizing cleaned items

Accepted Answer

Duration is prolonged but the temperature remains the same.
The general principle applied when utilizing steam sterilization especially when the used items were not cleaned prior to sterilization is to increase the duration of the steam sterilization process but the temperature is kept constant at 121oC. The other stated principles in the choices are not accurate with respect to steam sterilization.

Question 6

Drake correctly identifies which among the following is the most resistant to disinfectants?
A)Spores of Bacillus species
B)Mycobacterium species
C)Fungi
D)Poliovirus

Accepted Answer

Spores of bacillus species
When using high level disinfectants, or any disinfectant for that matter, it is important to note that the most resistant of all to these agents are the spores of bacteria such as the Bacillus species. Other choices are less resistant to chemical disinfectants.

Question 7

Earl understands correctly that which among the following is the easiest to kill or inhibit when using disinfectants in the laboratory?
A)Mycobacterium tuberculosis
B)Candida albicans
C)Rhinovirus
D)Ebola virus

Accepted Answer

Ebola virus
The easiest to kill or inhibit when using disinfectants in the laboratory are medium sized viruses such as the Ebola virus, hepatitis B and C viruses, and HIV. The other choices reflect microorganisms and viruses that are more resistant to disinfectants.

Question 8

Francis recalls correctly that which among the following substances are used in decontaminating large spaces inside the laboratory, except:
A)Formaldehyde gas
B)Hydrogen peroxide vapor
C)Glutaraldehyde vapor
D)Chlorine dioxide gas

Accepted Answer

Glutaraldehyde gas
The laboratory is usually made up of large spaces as work areas. Substances used in space decontamination or for large spaces are formaldehyde gas, hydrogen peroxide vapor, and chlorine dioxide gas. Glutaraldehyde is used as a sterilant/disinfectant inside the laboratory but it is not used for space decontamination.

Question 9

Gabin understands that he must apply which of the following precautions when dealing with blood samples and tissues that might have blood borne pathogens?
A)Standard precautions
B)Universal precautions
C)Contact precautions
D)Droplet precautions

Accepted Answer

Universal precautions
When handling blood samples and tissue samples that might contain blood borne pathogens, universal precautions must always be observed. This infection control approach is used to assume that human blood and other bodily fluids are infectious for blood borne pathogens such as HIV, Hepatitis B virus and Hepatitis C virus. Other precautions stated in the choices do not accurate match the description in the question.

Question 10

Harris is safely implementing infection control in the lab when he observes which of the following precautions when handling human tissues and organs before fixation?
A)Contact precaution
B)Standard precaution
C)Universal precaution
D)Airborne precaution

Accepted Answer

Universal precaution
Universal precaution is appropriately applied when handling human tissues and organs before they undergo fixation. Universal precautions are applied when working with blood as well as other potentially infectious materials that include tissues and organs that are not yet fixed. Other precautions in the choices are not appropriate when handling human tissues and organs.

Question 11

The histotechnician is correct when he applies which of the following precaution when dealing with another laboratory staff who coughs and sneezes in front of him?
A)Standard precaution
B)Airborne precaution
C)Droplet precaution
D)Vector precaution

Accepted Answer

Droplet precaution
When someone sneezes or coughs, the droplet precaution should be applied. This is because droplets may contain microorganisms and these can be propelled for a maximum of 1 meter. When initiating this precaution, a face mask should be donned or a respirator. Other precautions do not accurately apply to this kind of situation.

Question 12

The histology assistant understands the general principles of using personal protective equipment when he identifies which among the following is not correct?
A)Always perform hand hygiene before doing any personal protective equipment
B)Any damaged parts of are-usable personal protective equipment must be replaced immediately.
C)Removal of personal protective equipment can be delayed even after completing a procedure to save time and resources.
D)All single used personal protective equipment must be discarded properly and immediately after use.

Accepted Answer

Removal of personal protective equipment can be delayed even after completing a procedure to save time and resources.
All the other choices indicated are correct except for delaying the removal of personal protective equipment even after completing a procedure in order to save time and resources. It is best to immediately remove personal protective equipment every after the completion of a procedure and then perform medical hand washing.

Question 13

The histotechnician understands that the correct sequence of putting on personal protective equipment is done in which order?
A)Hand hygiene, mask, goggles, gown, gloves
B)Hand hygiene, gown, mask, goggles, gloves
C)Hand hygiene, gloves, mask, goggles, gown
D)Hand hygiene, gown, gloves, mask, goggles

Accepted Answer

Hand hygiene, gown, mask, goggles, gloves
The correct sequence in putting on personal protective equipment is by doing hand hygiene first, don a clean gown, wear a face mask, put on a pair of goggles, and then don a pair of gloves. The other options stated are incorrect sequences of donning personal protective equipment.

Question 14

The microscope is one of the most important instruments used in the laboratory. It is therefore a must that a histotechnician is knowledgeable about how to take care of the microscope. When removing the oil in the lens of a microscope, what should a histotechnician do?
A)Use a damped lens paper with alcohol
B)Use a damped cloth with xylene
C)Use a damped cloth with alcohol
D)Use a damped lens paper with xylene

Accepted Answer

Use a damped lens paper with xylene
The histotechnician must use a damped the lens paper with xylene. This is the proper way of removing the oil properly without scratching the lens of the microscope. Other options are not the correct way of removing oil in the microscope.

Question 15

Ben is correct when he disposes wastes in the laboratory that is dry and non infectious in which of the following trash bins?
A)Green
B)Yellow
C)Orange
D)Black

Accepted Answer

Black
The black color trash bin is used for disposing dry, non-infectious waste. Other colors of the trash bins are used for other types of wastes.

Question 16

Bing correctly disposes infectious, pathological wastes in which of the following trash bins?
A)Red
B)Yellow
C)Yellow with black band
D)Green

Accepted Answer

yellow
The yellow color trash bin is used for disposing infectious, pathological wastes. The other color of trash bins are used for other types of wastes.

Question 17

In which trash bin must Jay-ar dispose the needles and other sharps?
A)Black
B)Green
C)Red
D)Yellow

Accepted Answer

Red
The red color trash bins are used for containing needles and other sharps. The other color of the trash bins are used for other purposes.

Question 18

In which trash bin must Adrian dispose tissues that were fixed with mercuric chloride?
A)Orange
B)Yellow with black band
C)Red
D)Green

Accepted Answer

Yellow with black band
A trash bin that is colored yellow and has a black band on it, is used specifically for chemical wastes such as tissues fixed with mercuric chloride. Other colors of trash bins are used for other purposes.

Question 19

After the frozen section biopsy, Harry disposes properly the tumor specimen of a patient who previously underwent radiation therapy in which of the following trash bins?
A)Orange
B)Yellow
C)Red
D)Green

Accepted Answer

orange
An orange color trash bin is used to store radioactive wastes and specimens. The other color of the trash bins are used for other purposes.

Question 20

When carrying and transporting the microscope, what is the proper way of handling the microscope?
A)Hold the arm with the other hand and supporting the base with the other hand
B)Support the base with two hands
C)Hold the arm with both hands
D)Hold the arm with one hand

Accepted Answer

hold the arm with the other hand and support the base with the other hand
When carrying and transporting the microscope, the proper way of handling the microscope is to hold the arm with the other hand and supporting the base with the other hand. This is the proper way of carrying the microscope without putting any danger on it. The other options are improper methods of carrying the microscope.

Quiz 2: Laboratory Operations

Yam remembers correctly if he identifies which among the levels of disinfection is being described as being capable of sterilization if done for extended periods of time of up to 10 hours?

Zack recalls that the level of disinfection that is able to kill proliferative microorganisms, all types of fungi, and is able to inactivate most species of viruses is which among the following levels?

Ariel understands that the type of disinfection that is able to kill most species of bacteria, fungi, and viruses is which among the following categories?

Brian remembers correctly if he identifies which among the following is not a purpose of decontamination in the clinical laboratory?

Carlo is right when he identifies which principle is applied when using steam sterilization on items that were not pre-cleaned?

Drake correctly identifies which among the following is the most resistant to disinfectants?

Earl understands correctly that which among the following is the easiest to kill or inhibit when using disinfectants in the laboratory?

Francis recalls correctly that which among the following substances are used in decontaminating large spaces inside the laboratory, except:

Gabin understands that he must apply which of the following precautions when dealing with blood samples and tissues that might have blood borne pathogens?

Harris is safely implementing infection control in the lab when he observes which of the following precautions when handling human tissues and organs before fixation?

The histotechnician is correct when he applies which of the following precaution when dealing with another laboratory staff who coughs and sneezes in front of him?

The histology assistant understands the general principles of using personal protective equipment when he identifies which among the following is not correct?

The histotechnician understands that the correct sequence of putting on personal protective equipment is done in which order?

The microscope is one of the most important instruments used in the laboratory. It is therefore a must that a histotechnician is knowledgeable about how to take care of the microscope. When removing the oil in the lens of a microscope, what should a histotechnician do?

Ben is correct when he disposes wastes in the laboratory that is dry and non infectious in which of the following trash bins?

Bing correctly disposes infectious, pathological wastes in which of the following trash bins?

In which trash bin must Jay-ar dispose the needles and other sharps?

In which trash bin must Adrian dispose tissues that were fixed with mercuric chloride?

After the frozen section biopsy, Harry disposes properly the tumor specimen of a patient who previously underwent radiation therapy in which of the following trash bins?

When carrying and transporting the microscope, what is the proper way of handling the microscope?