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Textbook of Diagnostic Microbiology 4th Edition Test Bank

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Textbook of Diagnostic Microbiology 4th Edition Test Bank Sample Test Mahon: Textbook of Diagnostic Microbiology, 4th Edition Chapter 04: Control of Microorganisms Test Bank MULTIPLE CHOICE 1. The chemical or physical method that destroys all forms of li...

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  • March 1, 2022
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Textbook of Diagnostic Microbiology
4th Edition Test Bank



Sample Test



Mahon: Textbook of Diagnostic Microbiology, 4th Edition



Chapter 04: Control of Microorganisms



Test Bank



MULTIPLE CHOICE



1. The chemical or physical method that destroys all forms of life is called:

a. Sterilization

, b. Disinfection



c. Bacteriostatic



d. Bactericidal




ANS: A

Sterilization is the destruction of all forms of life, including bacterial spores.
Disinfection is a process that eliminates a defined scope of microorganisms, including,
in some cases, spores. Bacteriostatic inhibits the growth of microorganisms.
Bactericidal kills bacteria.



REF: page 62 OBJ: Level 1 – Recall



2. Organisms that are the most resistant to heat, chemicals, and radiation are:

a. Parasites



b. Prions



c. Bacteria



d. Viruses




ANS: B

Prions are naked pieces of protein, so they are harder to kill than any other
organism. Viruses usually contain a nucleic acid, and all the mentioned forms of
killing can effectively disrupt their

, nucleic acid. Bacteria and parasites are complete organisms that are killed by
disinfection and sterilization, even in the spore and cyst stages.



REF: page 63 OBJ: Level 1 – Recall



3. 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?

a. Sterilization



b. Bacteriostatic



c. Disinfection



d. Bactericidal




ANS: C

Sterilization kills all organisms and spores at a site. Bacteriostatic and bactericidal are
adjectives that describe the particular action of chemical agents: to inhibit bacterial
growth or kill bacteria.
Disinfection kills a defined scope of microorganisms.



REF: page 62 OBJ: Level 2 – Interpretation



4. 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):

a. Disinfectant



b. Sterilizer

, c. Antiseptic



d. Bactericidal




ANS: C

A disinfectant is a chemical agent used to kill microorganisms on an inanimate object.
To sterilize is to kill all life; skin will still have organisms growing after wiping.
Bactericidal is the process of killing bacteria. An antiseptic is a substance applied to the
skin for the purpose of eliminating or reducing the number of bacteria present.



REF: page 62 OBJ: Level 2 – Interpretation



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

a. Temperature



b. Contact time



c. Biofilms



d. Humidity




ANS: D

Temperature, contact time, and biofilms all play a role in selection and
implementation of the appropriate method of disinfection. Humidity is not
important when attempting to disinfect or kill organisms.

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