The Novel Basic Drug Methcathinone Has a PKa of 8

question 5

Multiple Choice

The novel basic drug methcathinone has a pKa of 8. OF is collected from a driver stopped for possible DUI and is tested in a forensic toxicology laboratory. Assuming the blood is at physiological pH and the OF has a pH of 6.5, the concentration detected in the OF is likely to be _________ than the plasma concentration.

• A) less than
• B) essentially the same
• C) higher
• D) much less
• E) none of the above

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Definitions:

Keeps Embryo Moist

A function of the amniotic egg or other structures in various organisms to prevent desiccation of the embryo in a terrestrial environment.

Extraembryonic Membrane

Membranes that are not part of the embryo but are essential for the development of the embryo, including the amnion, chorion, yolk sac, and allantois.

Makes Food Available

A process or action that ensures food resources are accessible to organisms, typically through production, distribution, or ecological interactions.

Extraembryonic Membrane

Membranes found outside the embryo in amniotes, including the amnion, chorion, yolk sac, and allantois, which support the embryo's development.