- A Increasing hepatic bile acid production specifically to eliminate excess circulating cholesterol
- B Competitively inhibiting HMG-CoA reductase, a key enzyme in cholesterol biosynthesis
- C Blocking intestinal absorption of dietary cholesterol directly from ingested food sources
- D Enhancing LDL receptor expression mainly within liver cell membranes specifically
Correct answer: B. Competitively inhibiting HMG-CoA reductase, a key enzyme in cholesterol biosynthesis
Explanation: Statins competitively inhibit HMG-CoA reductase (3-hydroxy-3-methylglutaryl coenzyme A reductase), the rate-limiting enzyme in the mevalonate pathway for cholesterol biosynthesis in the liver.
Concept context
Microorganisms in food, medicine, sewage treatment, biocontrol, and biofertilizers