Question

fill in the blank question the general structure of an amino acid is shown here. the amino group is represented by the arabic numeral , whereas the carboxyl group is indicated by . need help? review these concept resources. read about the concept assignment resources

Explanation:

An amino group has the structure -NH₂ (here in protonated form -NH₃⁺ in the image) and is labeled as 2. A carboxyl group has the structure -COOH (here in de - protonated form -COO⁻ in the image) and is labeled as 3.

Answer:

2
3