WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
1) Standard methods of sterilization are not effective in
inactivating
A) viruses.
B) bacterial cells.
C) prions.
D) bacterial endospores.
E) fungi. - CORRECT ANSWERS ✅c
2) Which of the following statements is true of
disinfectants?
A) Disinfectants are effective in destroying endospores.
B) Disinfectants are used on living tissue.
C) Disinfectants are used for sterilization.
D) Disinfectants are used on inanimate surfaces.
E) Disinfectants are only effective for short periods of
time (seconds to minutes). - CORRECT ANSWERS
✅D
3) Which of the following statements concerning microbial
death is FALSE?
A) It can be used to evaluate the efficacy of antimicrobial
agents.
,WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
B) It is constant over time of exposure to an antimicrobial
agent.
C) It is the permanent loss of a microbe's reproductive
ability.
D) It is the permanent loss of a microbe's ability to
reproduce and can be used to evaluate antimicrobial
agents.
E) It is not an effective means of evaluating the efficacy
of antimicrobial agents. - CORRECT ANSWERS ✅E
4) Which of the following is an example of sanitization?
A) A public toilet is treated with disinfectants.
B) A surgeon washes her hands before surgery.
C) Heat is used to kill potential pathogens in apple juice.
D) An autoclave is used to prepare nutrient agar.
E) A nurse prepares an injection site with an alcohol
swab. - CORRECT ANSWERS ✅A
5) Aseptic means
A) sterile.
B) free of all microbes.
C) clean.
,WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
D) sanitized.
E) free of pathogens. - CORRECT ANSWERS ✅E
6) Which of the following would NOT be bacteriostatic?
A) desiccation
B) freezing below 0°C
C) lyophilization
D) autoclaving
E) refrigeration of mesophiles - CORRECT ANSWERS
✅D
7) Antimicrobial agents that damage nucleic acids also
affect
A) the cell wall.
B) the cell membrane.
C) the viral envelope.
D) endospores.
E) protein synthesis. - CORRECT ANSWERS ✅E
8) Seventy percent alcohol is effective against
A) enveloped viruses.
, WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
B) nonenveloped viruses.
C) bacterial endospores.
D) protozoan cysts.
E) prions. - CORRECT ANSWERS ✅A
9) An instrument that will come into contact with only the
skin of a patient should be disinfected with a(n)
A) high-level germicide.
B) low-level germicide.
C) intermediate-level germicide.
D) degerming agent only.
E) germistatic agent only. - CORRECT ANSWERS ✅B
10) Which of the following is NOT an effective means of
sterilization?
A) ionizing radiation
B) incineration
C) lyophilization
D) autoclaving
E) dry heat - CORRECT ANSWERS ✅C
questions Ch. 1,3-11 Exams 2025
1) Standard methods of sterilization are not effective in
inactivating
A) viruses.
B) bacterial cells.
C) prions.
D) bacterial endospores.
E) fungi. - CORRECT ANSWERS ✅c
2) Which of the following statements is true of
disinfectants?
A) Disinfectants are effective in destroying endospores.
B) Disinfectants are used on living tissue.
C) Disinfectants are used for sterilization.
D) Disinfectants are used on inanimate surfaces.
E) Disinfectants are only effective for short periods of
time (seconds to minutes). - CORRECT ANSWERS
✅D
3) Which of the following statements concerning microbial
death is FALSE?
A) It can be used to evaluate the efficacy of antimicrobial
agents.
,WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
B) It is constant over time of exposure to an antimicrobial
agent.
C) It is the permanent loss of a microbe's reproductive
ability.
D) It is the permanent loss of a microbe's ability to
reproduce and can be used to evaluate antimicrobial
agents.
E) It is not an effective means of evaluating the efficacy
of antimicrobial agents. - CORRECT ANSWERS ✅E
4) Which of the following is an example of sanitization?
A) A public toilet is treated with disinfectants.
B) A surgeon washes her hands before surgery.
C) Heat is used to kill potential pathogens in apple juice.
D) An autoclave is used to prepare nutrient agar.
E) A nurse prepares an injection site with an alcohol
swab. - CORRECT ANSWERS ✅A
5) Aseptic means
A) sterile.
B) free of all microbes.
C) clean.
,WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
D) sanitized.
E) free of pathogens. - CORRECT ANSWERS ✅E
6) Which of the following would NOT be bacteriostatic?
A) desiccation
B) freezing below 0°C
C) lyophilization
D) autoclaving
E) refrigeration of mesophiles - CORRECT ANSWERS
✅D
7) Antimicrobial agents that damage nucleic acids also
affect
A) the cell wall.
B) the cell membrane.
C) the viral envelope.
D) endospores.
E) protein synthesis. - CORRECT ANSWERS ✅E
8) Seventy percent alcohol is effective against
A) enveloped viruses.
, WCU Micro Midterm Practice
questions Ch. 1,3-11 Exams 2025
B) nonenveloped viruses.
C) bacterial endospores.
D) protozoan cysts.
E) prions. - CORRECT ANSWERS ✅A
9) An instrument that will come into contact with only the
skin of a patient should be disinfected with a(n)
A) high-level germicide.
B) low-level germicide.
C) intermediate-level germicide.
D) degerming agent only.
E) germistatic agent only. - CORRECT ANSWERS ✅B
10) Which of the following is NOT an effective means of
sterilization?
A) ionizing radiation
B) incineration
C) lyophilization
D) autoclaving
E) dry heat - CORRECT ANSWERS ✅C
