16. How does aspirin relieve the symptoms of the flu?
(1) It forms a barrier around the outer surface of PGHS-2 molecules,
separating them from the prostaglandins.
(2) It dissolves the crystal of the enzyme, preventing it from producing
prostaglandins.
(3) It is an acid that dissolves the prostaglandins that cause the symptoms.
(4) It reduces the amount of raw material reaching the active site of the
enzyme that produces prostaglandins.