Chemically, an amino acid is a molecule that has a carboxylic acid group and an amine group that are each attached to a carbon atom called the α carbon. Each of the 20 amino acids has a specific ...

Samples from the asteroid Bennu contain the building blocks of life as we know it. Scientists are enthusiastic.

Diagram showing the functionalization of a metal oxide nanoparticle with various organic molecules, including trimethoxysilane, amine, phosphonic acid, carboxylic acid, dopamine, and cysteine. This ...