Polar Amino Acids An amino acid is polar when the R group is an alcohol, thiol, or amide. 11. Acidic Amino Acids An amino acid is acidic when the R group is a carboxylic acid. 12. Basic Amino Acids An amino acid is basic when the R group is an amine.
Friedensburg is a census-designated place (CDP) in Schuylkill County, Pennsylvania, United States. The population was 828 at the 2000 census.
Albrightsville is an unincorporated community and census-designated place in Kidder and Penn Forest townships, Carbon County, Pennsylvania, United States. As of the 2010 census, the population was 202. It is drained by Mud Run (which forms the township boundary) westward into the Lehigh River.