According to the kinetic theory, particles of a gas:
A. vibrate about fixed positions.
B. are close together.
C. undergo elastic collisions.
D. move slowly.
Answer: C
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A poisonous substance NOT derived from the metabolism of an organism which is essentially a foreign substance is referred to as:
A) toxicant. B) toxicology. C) toxidrome. D) toxicodynamics.
For Medicare Part A, a deductible applies:
to each benefit period. to each household. to each hospital admission. only if skilled nursing care is provided.
Homogentisic acid (HGA), which is colorless, can convert to a dark compound when:
A) reacted with hydrogen ions in slightly acid urines. B) exposed to carbon dioxide. C) mixed with hydrogen peroxide produced in acidic urines. D) exposed to air in an alkaline urine.
Acetylcholinesterase inhibitors elevate which of the following substances in the brain?
A) serotonin B) acetylcholine C) adrenaline D) none of the above