What this page covers
Practice Step 1-style biochemistry questions on Aspirin irreversible COX inhibition and prolonged antiplatelet effect, including Low-dose aspirin user asks why antiplatelet effect outlasts drug clearance, mechanism, with emphasis on enzyme / mechanism and answer-choice reasoning.
How to use this page
Review the topic and reasoning focus, then practice Step 1-style questions inside BiochemStep. The question set emphasizes mechanism-first answer-choice reasoning rather than passive content review.