The keyhole theory indicates that the larger the side-chain attachment to a catechol base, the
a. shorter the duration of action.
b. more easily it is metabolized.
c. more easily it is broken down by catechol O-methyltransferase (COMT).
d. greater the ?2 specificity.
ANS: D
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During a compounding procedure, a filter needle may be used:
A) once. B) twice. C) three times. D) up to five times.
Which of the following statements regarding fire-retardant treatment of wood is MOST accurate?
A) The fire retardant is intended to occur at temperatures lower than those developed in fires. B) The fire retardant is intended to occur at temperatures higher than those developed in fires. C) All chemicals used as fire retardants can be used for exterior applications. D) Fire retardant treatment of wood increases its strength.
Which BEST describes the Rankine temperature scale?
A) The measurement of heat energy B) A measurement of temperature used most commonly in the United States where 32 degrees is the freezing point of water C) A scale using absolute zero, where water freezes at 273.15 degrees and boils at 373.13 degrees D) A temperature measurement scale where all molecular movement ceases at zero degrees and water freezes at 491.67 degrees
Orally administered drugs are largely absorbed through the:
A) stomach. B) colon. C) duodenum. D) spleen.