In all accredited medical assisting programs, externships are ________.
A. unnecessary
B. mandatory
C. selective
D. voluntary
E. optional
Answer: B
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To survive adverse conditions, such as excessive heat and dryness, bacteria might do which of the following?
a. Store excess water in special sporelike structures b. Form large colonies in a short period of time c. Speed up their enzymatic processes d. Form endospores
The nonspecific body defense in which neutrophils and monocytes can leave the bloodstream to attack pathogens in other tissues is ________.
A. species resistance B. phagocytosis C. a chemical barrier D. a mechanical barrier E. inflammation
What is the threshold limit value?
a. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time b. The concentration of a substance, in milligrams per kilogram (mg/kg), that kills a laboratory animal within 48 hours c. The upper limit of a concentration to which an average healthy person can be repeatedly exposed on an all-day, everyday basis without suffering adverse health effects d. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency
The major drawback of master stream devices is that they ____.
A. have low mobility B. require multiple operators C. have too much mobility D. do not provide high volumes of water