Micro Exam 2 Chapter 9 Questions With Complete Solutions

Micro Exam 2 Chapter 9 Questions With Complete
Solutions


Silvadene, a topical treatment for burns, contains 1% silver.
What category of chemical control agent is in Silvadene?
heavy metals
Which of the following is the most appropriate pairing of
microbe and biosafety level?
A) E. coli, BSL-3
B) anthrax, BSL-1
C) Ebola, BSL-2
D) methicillin-resistant Staphylococcus aureus (MRSA), BSL-2
E) tuberculosis, BSL-1
D) methicillin-resistant Staphylococcus aureus (MRSA), BSL-2
The use of lysozyme during the preparation of cheeses and
wines is effective in reducing the numbers of
bacteria
Seventy percent of alcohol is effective against
enveloped viruses
Which of the following is a sterilizing agent?
A) ozone
B) hydrogen peroxide
C) peracetic acid
D) dish soap
E) ozone and hydrogen peroxide

, C) peracetic acid
Quaternary ammonium compounds are disinfectants effective
against
enveloped viruses
Which of the following is used to sterilize items that should not,
or cannot, be exposed to heat or water?A) ethylene oxide
B) formaldehyde
C) hydrogen peroxide
D) calcium hypochlorite
E) triclosan
etheylene oxide
What is the method of action of aldehydes?
They damage proteins and DNA
Disinfecting agents naturally produced by microorganisms are
antimicrobials
A chemical agent that kills pathogenic microbes in general is
a(n)
germicide
Which of the following is NOT a desirable characteristic of an
ideal antimicrobial agent?
A) It is inexpensive.
B) It is stable during storage.
C) It is harmless to humans.
D) It only arrests growth of vegetative cells.
E) It acts quickly.