GCSU Bachoon Microbiology Test 2 Exam Newest
2025/2026
Practice Exam With Complete Questions And Correct
Detailed Answers |Already Graded A+|Newest!
Version!!
Which of the following is true about membrane filters? -
ANSWER-It can't be depended on to remove all viruses
from liquids.
Portable UV room sterilizing units are being used to
reduce endospores of C. diff. in hospital rooms after
patients have vacated. Which of the statements best
describes this application? - ANSWER-UV radiation will
destroy C. difficile endospores assuming it is applied for a
long enough period and directly contacts all surfaces.
,T/F: Microorganisms show differential sensitivity to
antimicrobial agents. - ANSWER-True
T/F: Dry heat methods usually require lower temperatures
and shorter exposure times than moist heat methods to
achieve the same degree of killing because of the drying
effects of this form of heat. - ANSWER-False
Which of the following is MOST effective against resistant
endospores? - ANSWER-Autoclaving
, Amphipathic organic molecules that serve as disinfectants
by disrupting membranes and denaturing proteins are
called _________. - ANSWER-detergents
Moist heat sterilizes by _________. - ANSWER-
Denaturing proteins
Which of the following is (are) a sterilizing gas(es) that can
be used on heat-sensitive materials? - ANSWER-Ethylene
oxide
T/F: Heavy metals are effective antimicrobial agents but
are not widely used because of their high toxicity to
humans. - ANSWER-True
2025/2026
Practice Exam With Complete Questions And Correct
Detailed Answers |Already Graded A+|Newest!
Version!!
Which of the following is true about membrane filters? -
ANSWER-It can't be depended on to remove all viruses
from liquids.
Portable UV room sterilizing units are being used to
reduce endospores of C. diff. in hospital rooms after
patients have vacated. Which of the statements best
describes this application? - ANSWER-UV radiation will
destroy C. difficile endospores assuming it is applied for a
long enough period and directly contacts all surfaces.
,T/F: Microorganisms show differential sensitivity to
antimicrobial agents. - ANSWER-True
T/F: Dry heat methods usually require lower temperatures
and shorter exposure times than moist heat methods to
achieve the same degree of killing because of the drying
effects of this form of heat. - ANSWER-False
Which of the following is MOST effective against resistant
endospores? - ANSWER-Autoclaving
, Amphipathic organic molecules that serve as disinfectants
by disrupting membranes and denaturing proteins are
called _________. - ANSWER-detergents
Moist heat sterilizes by _________. - ANSWER-
Denaturing proteins
Which of the following is (are) a sterilizing gas(es) that can
be used on heat-sensitive materials? - ANSWER-Ethylene
oxide
T/F: Heavy metals are effective antimicrobial agents but
are not widely used because of their high toxicity to
humans. - ANSWER-True
