Amino acids are the building blocks of proteins. Which statement best describes the physical properties of the following amino acid?

Question

Quizplus · Accepted Answer

The amino acid described in the image has a large R-group (phenylalanine) which makes it hydrophobic and thus, it has low solubility in water. Additionally, the R group in phenylalanine contains a benzene ring which leads to a large dipole moment. This dipole moment along with the strong intermolecular forces due to the benzene ring results in high melting points. Therefore, the best choice is C.

Amino Acids Are the Building Blocks of Proteins