UPDATED ACTUAL Exam Questions and
CORRECT Answers
Absorption - CORRECT ANSWER - The process by which nutrient molecules pass
through the wall of the digestive system into the blood
distribution - CORRECT ANSWER - transport of drugs in bpdy fluids from the site of
absorption to: receptor site, storage site, elimination site
bioavailability - CORRECT ANSWER - Fraction of unchanged drug reaching the
systemic circulation following administration by any route
lipophilic - CORRECT ANSWER - Having an affinity for or an attraction to fat and oils
(oil-loving).
hydrophilic - CORRECT ANSWER - Having an affinity for water.
phospholipid bilayer - CORRECT ANSWER - Plasma membrane layers composed of
phospholipid molecules arranged with polar heads facing the outside and nonpolar tails facing
the inside.
passive diffusion - CORRECT ANSWER - movement of substances across a
semipermeable membrane with the concentration gradient; this process does not require energy
drug moving from higher to lower concentration
facilitated diffusion - CORRECT ANSWER - process of diffusion in which molecules
pass across the membrane through cell membrane channels
no energy