Answer: Agonist.
- A Antagonist
- B Agonist
- C Antibiotic
- D Antipyretic
Correct answer: B. Agonist
Explanation: An agonist binds a receptor and activates it just as the natural messenger would. An antagonist, by contrast, binds the receptor without activating it, blocking the natural messenger instead.
The hydrophobic hydrocarbon tail of each soap/detergent molecule dissolves into an oily dirt droplet, while the hydrophilic (ionic) head stays in the surrounding water - trapping the grease inside a micelle that rinses away with water.
Concept context
Drugs and how they interact with biological targets, chemicals in food, and cleansing agents (soaps and detergents) - chemistry applied directly to daily life and healthcare.