Question

Morphine is the structure chiefly responsible for the biological activity of opium. What is the name given to the chemical that is chiefly responsible for the biological activity of a natural extract?

• A. Lead compound
• B. Active principle
• C. Pharmacophore
• D. Lead principle

Answer 1

The correct option is B Active principle

An active ingredient(AI) is the ingredient in a pharmaceutical drug or pesticide that is biologically active. The similar terms active pharmaceutical ingredient(API) and bulk active substance may be used for natural products.