超星 - quiz for week 10

单选题

Pharmaceutics aims to_________.

A. design a proper dosage form for a given drug substance
B. discover a new chemical entity
C. optimize the structure of a drug substance
D. analyze impurities contained in a drug

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单选题

A well-designed dosage form may_______.

A. reduce toxic effect
B. speed up or slow down onset of action
C. increase drug selectivity
D. change drug effect
E. all of the above

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单选题

Which of the following factors will reduce a drug’s bioavailability?

A. incomplete dissolution
B. degradation by stomach acid
C. poor ability to go across cell membrane due to low hydrophobicity
D. poor dissolving in the stomach or small intestine due to low hydrophilicity
E. all of the above

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单选题

Syrups and elixirs contain ethanol to______.

A. increase the solubility of aromatic drug substance
B. kill microorganisms in the drug product
C. form heterogeneous mixture
D. make the drug more attractive to patients

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单选题

Which of the following inactive ingredients can prevent the growth of microorganisms in a solution?

A. stabilizer
B. preservative
C. flavorant
D. solvent

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单选题

Which of the following dosage forms is given parenterally?

A. powder for injection
B. chewable tablet
C. syrup
D. oral solution

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单选题

Dissolution refers to _________.

A. release of drug molecules from the surface of the solid drug and subsequent dissolving in the surrounding body fluid
B. drug movement through the GI tract
C. drug absorption into the blood
D. disintegration of solid dosage form into smaller pieces or particles.

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单选题

Certain antibiotics are formulated into powders and granules and reconstituted with purified water immediately before dispensing to the patient because _______.

A. they exhibit high bioavailability in solid dosage form
B. they are not stable enough in aqueous solution to withstand long shelf-lives
C. they have poor solubility in water
D. they undergo significant degradation in solid dosage form

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单选题

The underlined part in “hydrophilic” means_____.

A. loving
B. fearing
C. neutral
D. degradable

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单选题

The underlined part in “hydroalcoholic” means_____.

A. hydrogen
B. water
C. hydrate
D. ethanol

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