Answer: antibiotic.
- A analgesic
- B antibiotic
- C antacid
- D antihistamine
Correct answer: B. antibiotic
Explanation: Penicillin was the first widely used antibiotic, effective against many bacterial infections.
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.