Chapter 01: Scope of Microbiology and Infection Control
Miller: Infection Control and Management of Hazardous Materials for the Dental
Team, 6th Edition
MULTIPLE CHOICE
1. Who is reported to have first observed microbes?
a. Pasteur
b. Oliver Wendell Holmes
c. Lister
d. Leeuwenhoek
ANS: D
Pasteur, Oliver Wendell Holmes, and Lister made other important contributions to
microbiology. Leeumenhoek first observed microbes and called them “animalcules.”
PTS: 1 DIF: Recall REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
2. What year were microbes first observed?
a. 1667
b. 1880
c. 1956
d. 1975
ANS: A
Leeuwenhoek first observed microbes and called them “animalcules” in 1667, 1880, 1956,
and 1975 are all too recent.
PTS: 1 DIF: Recall REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
3. Choose the microbial killing method referred to as pasteurization.
a. 121°C for 20 minutes
b. 212°F for 5 minutes
c. 63°C for 30 minutes
d. 37°C for 10 minutes
ANS: C
121°C for 20 minutes achieves sterilization. 212°F for 5 minutes is the temperature of boiling
water. 63°C for 30 minutes achieves pasteurization which kills harmful microbes in liquids
such as milk. 37°C for 10 minutes is body temperature.
PTS: 1 DIF: Application REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, II.D. Demonstrate an understanding of asepsis procedures
4. When was the “Golden Age of Microbiology”?
a. Mid to late 1600s
b. Mid to late 1700s
Miller: Infection Control and Management of Hazardous Materials for the Dental
Team, 6th Edition
MULTIPLE CHOICE
1. Who is reported to have first observed microbes?
a. Pasteur
b. Oliver Wendell Holmes
c. Lister
d. Leeuwenhoek
ANS: D
Pasteur, Oliver Wendell Holmes, and Lister made other important contributions to
microbiology. Leeumenhoek first observed microbes and called them “animalcules.”
PTS: 1 DIF: Recall REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
2. What year were microbes first observed?
a. 1667
b. 1880
c. 1956
d. 1975
ANS: A
Leeuwenhoek first observed microbes and called them “animalcules” in 1667, 1880, 1956,
and 1975 are all too recent.
PTS: 1 DIF: Recall REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
3. Choose the microbial killing method referred to as pasteurization.
a. 121°C for 20 minutes
b. 212°F for 5 minutes
c. 63°C for 30 minutes
d. 37°C for 10 minutes
ANS: C
121°C for 20 minutes achieves sterilization. 212°F for 5 minutes is the temperature of boiling
water. 63°C for 30 minutes achieves pasteurization which kills harmful microbes in liquids
such as milk. 37°C for 10 minutes is body temperature.
PTS: 1 DIF: Application REF: p. 2 OBJ: 2
TOP: CDA, Infection Control, II.D. Demonstrate an understanding of asepsis procedures
4. When was the “Golden Age of Microbiology”?
a. Mid to late 1600s
b. Mid to late 1700s
