MICROBIO TERM 2 EXAM NURS-106 QUIZES AND VERIFIED SOLUTIONS
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RN - Registered Nurse
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RN - Registered Nurse
MICROBIO TERM 2 EXAM NURS-106 QUIZES AND VERIFIED SOLUTIONS
MICROBIO TERM 2 EXAM NURS-106 QUIZES AND VERIFIED SOLUTIONS
MICROBIO TERM 2 EXAM NURS-106 QUIZES AND VERIFIED SOLUTIONS
MICROBIO TERM 2 EXAM NURS-106 QUIZES AND
VERIFIED SOLUTIONS
SESSION 9
1. It would be necessary to use a tuberculocidal agent to kill a particular species of:
a. Clostridium.
b. Mycobacterium.
c. Staphylococcus.
d. Streptococcus.
Answer: B
Rationale: Tuberculocidal agents kill Mycobacterium Tuberculosis.
2. Pasteurization is an example of what kind of technique?
a. antiseptic
b. disinfection
c. sterilization
d. surgical aseptic
Answer: B
Rationale: Disinfection describes the elimination of most or all pathogens (except bacterial
spores) from nonliving objects. In healthcare settings, objects usually are disinfected by liquid
chemicals or wet pasteurization.
3. The combination of freezing and drying is known as:
a. desiccation.
b. lyophilization.
c. pasteurization.
d. tyndallization.
Answer: B
Rationale: Lyophilization is a process that combines dehydration (drying) and freezing.
Lyophilized materials are frozen in
,MICROBIO TERM 2 EXAM NURS-106 QUIZES AND
VERIFIED SOLUTIONS
a vacuum; the container is then sealed to maintain the inactive state.
4. Organisms that live in and around hydrothermal vents at the bottom of the ocean are:
a. acidophilic, psychrophilic, and halophilic.
b. halophilic, alkaliphilic, and psychrophilic.
c. halophilic, psychrophilic, and piezophilic.
d. halophilic, thermophilic, and
piezophilic. Answer: D
Rationale: Thermophiles are organisms that “love” high temperatures. They can be found at
hot springs, compost pits, and silage as well as in and near hydrothermal vents at the bottom
of the ocean.
5. When placed into a hypertonic solution, a bacterial cell will:
a. take in more water than it releases.
b. lyse.
c. shrink.
d. swell.
Answer: C
Rationale: Hypertonic solution, the concentration of solutes in the environment outside of a
cell is greater than the concentration of solutes inside the cell. Cells lose water and shrink when
placed into a hypertonic solution.
6. To prevent Clostridium infections in a hospital setting, what kind of disinfectant should
be used?
a. fungicidal
b. pseudomonicidal
c. sporicidal
d. tuberculocidal
Answer: C
Rationale: Bactericidal agents (bactericides) specifically kill bacteria, but not necessarily
bacterial endospores. Because spore coats are thick and resistant to the effects of
many disinfectants. Sporicidal agents are required to kill bacterial endospores.
,MICROBIO TERM 2 EXAM NURS-106 QUIZES AND
VERIFIED SOLUTIONS
7. Sterilization can be accomplished by use of:
a. an autoclave.
b. antiseptics.
c. medical aseptic techniques.
d. pasteurization.
Answer: A
Rationale: Autoclave is like a large metal pressure cooker that uses steam under pressure to
completely destroy all microbial life.
8. The goal of medical asepsis is to kill , whereas the goal of surgical asepsis is
to kill .
a. all microorganisms.......pathogens
b. bacteria.......bacteria and viruses
c. nonpathogens.......pathogens
d. pathogens.......all microorganisms
Answer: D
Rationale: The two general categories of aseptic technique— medical and surgical asepsis—
techniques, Medical Asepsis eliminate and exclude pathogens while surgical asepsis eliminates
and exclude all microorganism
9. Which of the following types of culture media is selective and differential?
a. blood agar
b. MacConkey agar
c. phenylethyl alcohol agar
d. Thayer-Martin
agar Answer: B
Rationale: The various categories of media (enriched, selective, differential) are not mutually
exclusive. For example, as just seen, blood agar is enriched and differential. MacConkey agar
and MSA are selective and differential. PEA and CAN are enriched and selective: they are blood
agars to which selective inhibitory substances have been added. Thayer-Martin and Martin-
Lewis agars are highly enriched and highly selective
10. All the following types of culture media are enriched and selective except:
, MICROBIO TERM 2 EXAM NURS-106 QUIZES AND
VERIFIED SOLUTIONS
a. blood agar.
b. colistin–nalidixic acid agar.
c. phenylethyl alcohol agar.
d. Thayer-Martin agar.
Answer: A
Rationale: The various categories of media (enriched, selective, differential) are not mutually
exclusive. For example, as just seen, blood agar is enriched and differential. MacConkey agar
and MSA are selective and differential. PEA and CAN are enriched and selective: they are blood
agars to which selective inhibitory substances have been added. Thayer-Martin and Martin-
Lewis agars are highly enriched and highly selective
SESSION 10
1. Which of the following is least likely to be taken into consideration when deciding
which antibiotic to prescribe for a patient?
a. patient’s age
b. patient’s underlying medical conditions
c. patient’s weight
d. other medications that the patient is
taking Answer: C
Rationale: All are important parameters that must be taken into consideration when
deciding which antibiotic to prescribe for a patient but age, medical conditions and others
medication are in priority because they usually affect the absorption and effects of the
drugs.
2. This drug inhibit production of folic acid (a vitamin) in those bacteria that require
ρ- aminobenzoic acid (PABA) to synthesize folic acid.
a. penicillin
b. sulfonamide
c. cephalosporin
d. aminoglycosides
Answer: B
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