Question

1. draw the lewis structure of the 3 - atom functional group containing nitrogen, called an amine group, that dopamine and adenine both have in common? (insert your drawing here)

Explanation:

An amine group with 3 atoms (nitrogen and two hydrogens) has nitrogen in the center. Nitrogen has 5 valence electrons. It forms single bonds with two hydrogen atoms (using 2 electrons). The remaining 3 electrons are as a lone pair.

Answer:

$$\text{H}-\text{N}-\text{H}$$ with a lone pair on the nitrogen atom.