Answer: Aspartic acid and phenylalanine.
- A Glycine and alanine
- B Aspartic acid and phenylalanine
- C Glutamic acid and serine
- D Lysine and valine
Correct answer: B. Aspartic acid and phenylalanine
Explanation: Aspartame is the methyl ester of a dipeptide of aspartic acid and phenylalanine. Being a peptide, it is unstable to heat and cannot be used for cooking.
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.