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Test Bank (Download Now) For Infection Control and Management of Hazardous Materials for the Dental Team 6th Edition by Miller ISBN: 9780323400619

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Test Bank (Download Now) For Infection Control and Management of Hazardous Materials for the Dental Team 6th Edition by Miller ISBN: 9780323400619

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Chapter 02: Characteristics of Microorganisms
Miller: Infection Control and Management of Hazardous Materials for the Dental
Team, 6th Edition
MULTIPLE CHOICE
1. Under what conditions do regular bacteria, excluding Richettsia and Chlamydia, multiply:
a. in the absence of nutrients.
b. only when they are inside of living cells.
c. when they are outside of living cells.
d. only when the temperature is below 7°C.
ANS: C
Nothing can grow in the absence of nutrients. Rickettsia and Chlamydia are the only bacteria
that can grow inside living cells. Regular bacteria do not need to be inside living cells to grow.
They can obtain their nutrients from the environment. Only the special bacteria called
psychrophiles can grow at these low temperatures.
PTS: 1 DIF: Application REF: p. 12 OBJ: 1
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
2. Select an environment in which viruses can multiply.
a. Only in the absence of nutrients
b. Only when they are inside of living cells
c. Only when they are outside of living cells
d. Only when the temperature is below 7°C
ANS: B
Nothing can grow in the absence of nutrients. Viruses need the nutrients and metabolic
machinery of living cells to multiply. Viruses cannot obtain their nutrients from the
environment. Only the special bacteria called psychrophiles can grow at these low
temperatures.
PTS: 1 DIF: Application REF: p. 14 OBJ: 2
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk
3. Which of the following microbes is a yeast?
a. Streptococcus mutans
b. Trichomonas vaginalis
c. Candida albicans
d. Staphylococcus aureus
ANS: C
Streptococcus mutans is a bacterium. Trichomonas vaginalis is a protozoan. Candida albicans
can exist as a yeast which is a special fungus. Staphylococcus aureus is a bacterium.
PTS: 1 DIF: Recall REF: p. 15 OBJ: 3
TOP: CDA, Infection Control, I.A. Demonstrate an understanding of infectious diseases and their
relationship to patient safety and occupational risk